/Dictionary /Index W willow ptarmigan: Meaning and Definition of Find definitions for: wil'low ptar'migan Pronunciation:[key] a ptarmigan, Lagopus lagopus, of arctic and subarctic regions of the New and Old Worlds, having brown, mottled plumage in summer and white plumage in winter. Cf. Random House Unabridged Dictionary,Copyright © 1997, by Random House, Inc., on Infoplease. willow pattern Willow Run Related Content Daily Word Quiz:quibble Analogy of the Day:今天的类比 Spelling Bee:Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language