/ Dictionary / Index W Waltham Forest: Meaning and Definition of Find definitions for: Wal'tham For'est Pronunciation: (wôl'tum, -thum), [key] a borough of Greater London, England. 228,200. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Waltham Walthamstow Related Content Daily Word Quiz: supercilious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language