[book louse] n (1867): any of various tiny usu. wingless insects (order Psocoptera) that feed on organic matter; esp: an insect (as Liposcelis divinatorius) injurious esp. to books
BOOK LOUSE
Meaning of BOOK LOUSE in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012