1.A parasitic louse (Pediculus humanus corporis) that infests the body and clothes of human beings.
一种寄生的昆虫（体虱虱属），寄生在人的身体或衣服上。
2.The head louse, Pediculus humanus capitis is a tiny insect which lives on the hair. Occasionally, it is also seen in the eyebrows or beard.
头虱是一种寄生于头发上的细小昆虫，有时亦会在眼眉或胡须间出现。