/ Dictionary / Index B barklouse: Meaning and Definition of Find definitions for: bark•louse Pronunciation: (bärk'lous"), [key] — pl. -lice any of numerous insects of the order Psocoptera that live on the bark of trees and other plants. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Barkley Bar Kokba Related Content Daily Word Quiz: pundit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language