/ Dictionary / Index W water locust: Meaning and Definition of Find definitions for: wa'ter lo"cust Pronunciation: [key] a spiny tree, Gleditsia aquatica, of the legume family, native to the southeastern coastal U.S., having pinnate leaves, greenish-yellow, bell-shaped flowers, and long-stalked, thin pods. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. waterlocked waterlog Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language