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Definitions for: Louse
[n] wingless usually flattened blood-sucking insect parasitic on warm-blooded animals
[n] wingless insect with mouth parts adapted for biting; mostly parasitic on birds
[n] any of several small insects especially aphids that feed by sucking the juices from plants
[n] has a nasty or unethical character undeserving of respect
Webster (1913) Definition: Louse (lous), n.; 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.] (Zo["o]l.)
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 ({P.
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 (Zo["o]l.), a parasitic dipterous insect of the
group Pupipara. Some of them are wingless, as the bee
louse.
Louse mite (Zo["o]l.), 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.
Louse, v. t.
To clean from lice. ``You sat and loused him.'' --Swift.
Synonyms: bird louse, biting louse, dirt ball, insect, plant louse, sucking louse, worm
See Also: adelgid, Anoplura, aphid, body louse, chicken louse, common louse, cootie, crab, crab louse, disagreeable person, grape louse, grape phylloxera, head louse, homopteran, homopterous insect, insect, jumping plant louse, Mallophaga, Menopon gallinae, Menopon palladum, oak blight, order Anoplura, order Mallophaga, Pediculus capitis, Pediculus corporis, Pediculus humanus, Phthirius pubis, Phylloxera vitifoleae, psylla, psyllid, pubic louse, shaft louse, unpleasant person
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