/ Dictionary / Index W willow warbler: Meaning and Definition of Find definitions for: wil'low war"bler Pronunciation: [key] any of several usually grayish-green leaf warblers, esp. Phylloscopus trochilus, of Europe. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. willowwacks willowware Related Content Daily Word Quiz: stringent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language