Minute wingless psocopterous insects injurious to books and papers; SYN. book louse, deathwatch, Liposcelis divinatorius.
Any of numerous species of tiny wingless insects of the order Psocoptera, especially Atropus pulsatoria, which lives in books and papers, feeding on starches and molds.
Most of the other species live in bark, leaves, and lichens. They thrive in dark, damp conditions. booklouse, book-louse
Someone who spends a great deal of time reading. book-worm