/ Dictionary / Index W westbound: Meaning and Definition of Find definitions for: west•bound Pronunciation: (west'bound"), [key] — adj. proceeding or headed west. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: westbound (Thesaurus) Westborough West Bromwich Related Content Daily Word Quiz: sinister Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language