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

Jam \Jam\, n. [Prob. fr. jam, v.; but cf. also Ar. jamad ice,
jelly, j[=a]mid congealed, jamd congelation, ice.]
A preserve of fruit boiled with sugar and water; also called
{jelly}; as, raspberry jam; currant jam; grape jam.
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{Jam nut}. See {Check nut}, under {Check}.

{Jam weld} (Forging), a butt weld. See under {Butt}.
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Jelly \Jel"ly\, v. i. [imp. & p. p. {Jellied}; p. pr. & vb. n.
{Jellying}.]
To become jelly; to come to the state or consistency of
jelly.
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jelly \jel"ly\, n.; pl. {Jellies}. [ Formerly gelly, gely, F.
gel['e]e jelly, frost, fr. geler to freeze. L. gelare; akin
to gelu frost. See {Gelid}.]
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1. Anything brought to a gelatinous condition; a viscous,
translucent substance in a condition between liquid and
solid; a stiffened solution of gelatin, gum, or the like.
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2. The juice of fruits or meats boiled with sugar to an
elastic consistence; as, currant jelly; calf's-foot jelly.
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{Jelly bag}, a bag through which the material for jelly is
strained.

{Jelly mold}, a mold for forming jelly in ornamental shapes.


{Jelly plant} (Bot.), Australian name of an edible seaweed
({Eucheuma speciosum}), from which an excellent jelly is
made. --J. Smith.

{Jelly powder}, an explosive, composed of nitroglycerin and
collodion cotton; -- so called from its resemblance to
calf's-foot jelly.
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