From The Collaborative International Dictionary of English v.0.48:
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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From The Collaborative International Dictionary of English v.0.48:
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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