Breadcrumb Home > 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: hegira Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language