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From The Collaborative International Dictionary of English v.0.48 [gcide]:
Louse \Louse\ (lous), noun; pl. {Lice} (l[imac]s). [OE. lous, AS. l[=u]s, pl. l[=y]s; akin to D. luis, G. laus, OHG. l[=u]s, Icel. l[=u]s, Sw. lus, Dan. luus; perh. so named because it is destructive, and akin to E. lose, loose.] (Zool.)
1. Any one of numerous species of small, wingless, suctorial, parasitic insects belonging to a tribe ({Pediculina}), now usually regarded as degraded Hemiptera. To this group belong of the lice of man and other mammals; as, the head louse of man ({Pediculus capitis}), the body louse ({Pediculus vestimenti}), and the crab louse ({Phthirius pubis}), and many others. See {Crab louse}, {Dog louse}, {Cattle louse}, etc., under {Crab}, {Dog}, etc.
2. Any one of numerous small mandibulate insects, mostly parasitic on birds, and feeding on the feathers. They are known as Mallophaga, or bird lice, though some occur on the hair of mammals. They are usually regarded as degraded Pseudoneuroptera. See {Mallophaga}.
3. Any one of the numerous species of aphids, or plant lice. See {Aphid}.
4. Any small crustacean parasitic on fishes. See {Branchiura}, and {Ichthvophthira}.
Note: The term is also applied to various other parasites; as, the whale louse, beelouse, horse louse.
{Louse fly} (Zool.), a parasitic dipterous insect of the group Pupipara. Some of them are wingless, as the bee louse.
{Louse mite} (Zool.), any one of numerous species of mites which infest mammals and birds, clinging to the hair and feathers like lice. They belong to {Myobia}, {Dermaleichus}, {Mycoptes}, and several other genera.
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Louse \Louse\ (louz), verb (used with an object) To clean from lice. "You sat and loused him." --Swift.
From WordNet (r) 3.0 (2006) [wn]:
noun
1: wingless usually flattened bloodsucking insect parasitic on warm-blooded animals [syn: {louse}, {sucking louse}]
2: a person who has a nasty or unethical character undeserving of respect [syn: {worm}, {louse}, {insect}, {dirt ball}]
3: any of several small insects especially aphids that feed by sucking the juices from plants [syn: {plant louse}, {louse}]
4: wingless insect with mouth parts adapted for biting; mostly parasitic on birds [syn: {bird louse}, {biting louse}, {louse}]
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Definitions retrieved from the Open Source DICT Webster's English and WordNet 3.0 dictionaries. Click here for database copyright information.
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