book louse book·louse uncommon noun 1. minute wingless psocopterous insects injurious to books and papers Synonymsbooklousebook lousedeathwatchLiposcelis divinatorius Related words Broader terms psocopterous insect Narrower terms common booklouse Parts Liposcelis WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
