Webster's Revised Unabridged Dictionary · 1913

Mallophaga

Mallophaga (mal*lof"ȧ*gȧ) , noun, plural

[New Latin, from Greek mallo`s a lock of wool + fagei^n to eat.]

(Zoology) An extensive group of insects which are parasitic on birds and mammals, and feed on the feathers and hair; -- called also bird lice. See Bird louse, under Bird.