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The Collaborative International Dictionary of English v.0.48 (gcide)

Roc \Roc\, n. [Ar. & Per. rokh or rukh. Cf. {Rook} a castle.]
A monstrous bird of Arabian mythology. [Written also {rock},
and {rukh}.] --Brande & C.
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Rock \Rock\, n.
See {Roc}.
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Rock \Rock\, n. [OE. rocke; akin to D. rok, rokken, G. rocken,
OHG. roccho, Dan. rok, Icel. rokkr. Cf. {Rocket} a firework.]
A distaff used in spinning; the staff or frame about which
flax is arranged, and from which the thread is drawn in
spinning. --Chapman.
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Sad Clotho held the rocke, the whiles the thread
By grisly Lachesis was spun with pain,
That cruel Atropos eftsoon undid. --Spenser.
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Rock \Rock\, n. [OF. roke, F. roche; cf. Armor. roc'h, and AS.
rocc.]
1. A large concreted mass of stony material; a large fixed
stone or crag. See {Stone}.
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Come one, come all! this rock shall fly
From its firm base as soon as I. --Sir W.
Scott.
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2. (Geol.) Any natural deposit forming a part of the earth's
crust, whether consolidated or not, including sand, earth,
clay, etc., when in natural beds.
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3. That which resembles a rock in firmness; a defense; a
support; a refuge.
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The Lord is my rock, and my fortress. --2 Sam. xxii.
2.
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4. Fig.: Anything which causes a disaster or wreck resembling
the wreck of a vessel upon a rock.
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5. (Zool.) The striped bass. See under {Bass}.
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Note: This word is frequently used in the formation of
self-explaining compounds; as, rock-bound, rock-built,
rock-ribbed, rock-roofed, and the like.
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{Rock alum}. [Probably so called by confusion with F. roche a
rock.] Same as {Roche alum}.

{Rock barnacle} (Zool.), a barnacle ({Balanus balanoides})
very abundant on rocks washed by tides.

{Rock bass}. (Zool.)
(a) The stripped bass. See under {Bass}.
(b) The goggle-eye.
(c) The cabrilla. Other species are also locally called
rock bass.

{Rock builder} (Zool.), any species of animal whose remains
contribute to the formation of rocks, especially the
corals and Foraminifera.

{Rock butter} (Min.), native alum mixed with clay and oxide
of iron, usually in soft masses of a yellowish white
color, occuring in cavities and fissures in argillaceous
slate.

{Rock candy}, a form of candy consisting of crystals of pure
sugar which are very hard, whence the name.

{Rock cavy}. (Zool.) See {Moco}.

{Rock cod} (Zool.)
(a) A small, often reddish or brown, variety of the cod
found about rocks andledges.
(b) A California rockfish.

{Rock cook}. (Zool.)
(a) A European wrasse ({Centrolabrus exoletus}).
(b) A rockling.

{Rock cork} (Min.), a variety of asbestus the fibers of which
are loosely interlaced. It resembles cork in its texture.


{Rock crab} (Zool.), any one of several species of large
crabs of the genus {C}, as the two species of the New
England coast ({Cancer irroratus} and {Cancer borealis}).
See Illust. under {Cancer}.

{Rock cress} (Bot.), a name of several plants of the cress
kind found on rocks, as {Arabis petraea}, {Arabis lyrata},
etc.

{Rock crystal} (Min.), limpid quartz. See {Quartz}, and under
{Crystal}.

{Rock dove} (Zool.), the rock pigeon; -- called also {rock
doo}.

{Rock drill}, an implement for drilling holes in rock; esp.,
a machine impelled by steam or compressed air, for
drilling holes for blasting, etc.

{Rock duck} (Zool.), the harlequin duck.

{Rock eel}. (Zool.) See {Gunnel}.

{Rock goat} (Zool.), a wild goat, or ibex.

{Rock hopper} (Zool.), a penguin of the genus {Catarractes}.
See under {Penguin}.

{Rock kangaroo}. (Zool.) See {Kangaroo}, and {Petrogale}.

{Rock lobster} (Zool.), any one of several species of large
spinose lobsters of the genera {Panulirus} and
{Palinurus}. They have no large claws. Called also {spiny
lobster}, and {sea crayfish}.

{Rock meal} (Min.), a light powdery variety of calcite
occuring as an efflorescence.

{Rock milk}. (Min.) See {Agaric mineral}, under {Agaric}.

{Rock moss}, a kind of lichen; the cudbear. See {Cudbear}.

{Rock oil}. See {Petroleum}.

{Rock parrakeet} (Zool.), a small Australian parrakeet
({Euphema petrophila}), which nests in holes among the
rocks of high cliffs. Its general color is yellowish olive
green; a frontal band and the outer edge of the wing
quills are deep blue, and the central tail feathers bluish
green.

{Rock pigeon} (Zool.), the wild pigeon ({Columba livia}) Of
Europe and Asia, from which the domestic pigeon was
derived. See Illust. under {Pigeon}.

{Rock pipit}. (Zool.) See the Note under {Pipit}.

{Rock plover}. (Zool.)
(a) The black-bellied, or whistling, plover.
(b) The rock snipe.

{Rock ptarmigan} (Zool.), an arctic American ptarmigan
({Lagopus rupestris}), which in winter is white, with the
tail and lores black. In summer the males are grayish
brown, coarsely vermiculated with black, and have black
patches on the back.

{Rock rabbit} (Zool.), the hyrax. See {Cony}, and {Daman}.

{Rock ruby} (Min.), a fine reddish variety of garnet.

{Rock salt} (Min.), cloride of sodium (common salt) occuring
in rocklike masses in mines; mineral salt; salt dug from
the earth. In the United States this name is sometimes
given to salt in large crystals, formed by evaporation
from sea water in large basins or cavities.

{Rock seal} (Zool.), the harbor seal. See {Seal}.

{Rock shell} (Zool.), any species of Murex, Purpura, and
allied genera.

{Rock snake} (Zool.), any one of several large pythons; as,
the royal {rock snake} ({Python regia}) of Africa, and the
{rock snake} of India ({Python molurus}). The Australian
rock snakes mostly belong to the allied genus {Morelia}.


{Rock snipe} (Zool.), the purple sandpiper ({Tringa
maritima}); -- called also {rock bird}, {rock plover},
{winter snipe}.

{Rock soap} (Min.), a kind of clay having a smooth, greasy
feel, and adhering to the tongue.

{Rock sparrow}. (Zool.)
(a) Any one of several species of Old World sparrows of
the genus {Petronia}, as {Petronia stulla}, of Europe.
(b) A North American sparrow ({Pucaea ruficeps}).

{Rock tar}, petroleum.

{Rock thrush} (Zool.), any Old World thrush of the genus
{Monticola}, or {Petrocossyphus}; as, the European rock
thrush ({Monticola saxatilis}), and the blue rock thrush
of India ({Monticola cyaneus}), in which the male is blue
throughout.

{Rock tripe} (Bot.), a kind of lichen ({Umbilicaria
Dillenii}) growing on rocks in the northen parts of
America, and forming broad, flat, coriaceous, dark fuscous
or blackish expansions. It has been used as food in cases
of extremity.

{Rock trout} (Zool.), any one of several species of marine
food fishes of the genus {Hexagrammus}, family {Chiradae},
native of the North Pacific coasts; -- called also {sea
trout}, {boregat}, {bodieron}, and {starling}.

{Rock warbler} (Zool.), a small Australian singing bird
({Origma rubricata}) which frequents rocky ravines and
water courses; -- called also {cataract bird}.

{Rock wren} (Zool.), any one of several species of wrens of
the genus {Salpinctes}, native of the arid plains of Lower
California and Mexico.
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Rock \Rock\, v. t. [imp. & p. p. {Rocked};p. pr. & vb. n.
{Rocking}.] [AS. roccian; akin to Dan. rokke to move, to
snake; cf. Icel. rukkja to pull, move, G. r["u]cken to move,
push, pull.]
1. To cause to sway backward and forward, as a body resting
on a support beneath; as, to rock a cradle or chair; to
cause to vibrate; to cause to reel or totter.
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A rising earthquake rocked the ground. --Dryden.
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2. To move as in a cradle; hence, to put to sleep by rocking;
to still; to quiet. "Sleep rock thy brain." --Shak.
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Note: Rock differs from shake, as denoting a slower, less
violent, and more uniform motion, or larger movements.
It differs from swing, which expresses a vibratory
motion of something suspended.
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Rock \Rock\, v. i.
1. To move or be moved backward and forward; to be violently
agitated; to reel; to totter.
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The rocking town
Supplants their footsteps. --J. Philips .
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2. To roll or saway backward and forward upon a support; as,
to rock in a rocking-chair.
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Crack \Crack\, n.
1. A partial separation of parts, with or without a
perceptible opening; a chink or fissure; a narrow breach;
a crevice; as, a crack in timber, or in a wall, or in
glass.
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2. Rupture; flaw; breach, in a moral sense.
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My love to thee is sound, sans crack or flaw.
--Shak.
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3. A sharp, sudden sound or report; the sound of anything
suddenly burst or broken; as, the crack of a falling
house; the crack of thunder; the crack of a whip.
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Will the stretch out to the crack of doom? --Shak.
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4. The tone of voice when changed at puberty.
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Though now our voices
Have got the mannish crack. --Shak.
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5. Mental flaw; a touch of craziness; partial insanity; as,
he has a crack.
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6. A crazy or crack-brained person. [Obs.]
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I . . . can not get the Parliament to listen to me,
who look upon me as a crack and a projector.
--Addison.
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7. A boast; boasting. [Obs.] "Crack and brags." --Burton.
"Vainglorius cracks." --Spenser.
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8. Breach of chastity. [Obs.] --Shak.
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9. A boy, generally a pert, lively boy. [Obs.]
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Val. 'T is a noble child. Vir. A crack, madam.
--Shak.
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10. A brief time; an instant; as, to be with one in a crack.
[Eng. & Scot. Colloq.]
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11. Free conversation; friendly chat. [Scot.]
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What is crack in English? . . . A crack is . . . a
chat with a good, kindly human heart in it. --P. P.
Alexander.
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12. a witty remark; a wisecrack.
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13. a chance or opportunity to do something; an attempt; as,
I'll take a crack at it.
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14. a form of cocaine, highly purified and prepared as small
pellets, especially suitable for smoking; -- also called
{rock}. Used in this form it appears to be more addicting
than cocaine powder. [slang]
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