|a parasitic louse, Pthirus (or Phthirus) pubis, that infests the pubic region in man|
|—n , pl lice, louses|
|1.||any wingless bloodsucking insect of the order Anoplura: includes Pediculus capitis (head louse), Pediculus corporis (body louse), and the crab louse, all of which infest manRelated: pedicular|
|2.||biting louse, bird louse any wingless insect of the order Mallophaga, such as the chicken louse: external parasites of birds and mammals with biting mouthparts|
|3.||any of various similar but unrelated insects, such as the plant louse and book louse|
|4.||slang an unpleasant or mean person|
|5.||to remove lice from|
|[Old English lūs; related to Old High German, Old Norse lūs]|
crab louse n.
A sucking louse that generally infests the pubic region and causes severe itching.
n. pl. lice (līs)
Any of numerous small, flat-bodied, wingless biting or sucking insects of the orders Mallophaga or Anoplura, many of which are external parasites on humans.