Definition of biting louse
: any of numerous wingless insects (order Mallophaga) that are parasitic especially on birds —called also bird louse
First Known Use of biting louse
Medical Definition of biting louse
: any of numerous wingless insects of the order Mallophaga that are mostly parasitic on birds but sometimes on mammals, have mouths adapted to biting instead of sucking, and feed on feathers, hair, or skin of the host often causing injury—called also bird louse
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