louse /ˈlaʊs/ 名詞
Louse n.; pl. Lice 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.
Louse v. t. To clean from lice. “You sat and loused him.”
n 1: wingless usually flattened blood-sucking insect parasitic on
warm-blooded animals [syn: sucking louse]
2: a person who has a nasty or unethical character undeserving
of respect [syn: worm, insect, dirt ball]
3: any of several small insects especially aphids that feed by
sucking the juices from plants [syn: plant louse]
4: wingless insect with mouth parts adapted for biting; mostly
parasitic on birds [syn: bird louse, biting louse]
[also: lice (pl)]