/ Dictionary / Index W Willowbrook: Meaning and Definition of Find definitions for: Wil•low•brook Pronunciation: (wil'ō-brook"), [key] — n. a city in SW California. 30,845. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. willow willower 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