/ Dictionary / Index L locust bean: Meaning and Definition of Find definitions for: lo'cust bean" Pronunciation: [key] carob. a seed of a carob pod. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. locust locust years Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language