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

Itch \Itch\ ([i^]ch), v. i. [imp. & p. p. {Itched} ([i^]cht); p.
pr. & vb. n. {Itching}.] [OE. icchen, [yogh]icchen, AS.
giccan; akin to D. jeuken, joken, G. jucken, OHG. jucchen.]
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1. To have an uneasy sensation in the skin, which inclines
the person to scratch the part affected.
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My mouth hath itched all this long day. --Chaucer.
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2. To have a constant desire or teasing uneasiness; to long
for; as, itching ears. "An itching palm." --Shak.
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Itch \Itch\, n.
1. (Med.) An eruption of small, isolated, acuminated
vesicles, produced by the entrance of a parasitic mite
(the {Sarcoptes scabei}), and attended with itching. It is
transmissible by contact.
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2. Any itching eruption.
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3. A sensation in the skin occasioned (or resembling that
occasioned) by the itch eruption; -- called also
{scabies}, {psora}, etc.
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4. A constant irritating desire.
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An itch of being thought a divine king. --Dryden.
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{Baker's itch}. See under {Baker}.

{Barber's itch}, sycosis.

{Bricklayer's itch}, an eczema of the hands attended with
much itching, occurring among bricklayers.

{Grocer's itch}, an itching eruption, being a variety of
eczema, produced by the sugar mite ({Tyrogluphus
sacchari}).

{Itch insect} (Zool.), a small parasitic mite ({Sarcoptes
scabei}) which burrows and breeds beneath the human skin,
thus causing the disease known as the itch. See Illust. in
Append.

{Itch mite}. (Zool.) Same as {Itch insect}, above. Also,
other similar mites affecting the lower animals, as the
horse and ox.

{Sugar baker's itch}, a variety of eczema, due to the action
of sugar upon the skin.

{Washerwoman's itch}, eczema of the hands and arms, occurring
among washerwomen.
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