/ Dictionary / Index S Swainson's thrush: Meaning and Definition of Find definitions for: Swain'son's thrush' Pronunciation: [key] a North American thrush, Catharus ustulatus, having olive upper parts and wintering south to Argentina. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Swainson's hawk S.W.A.K. Related Content Daily Word Quiz: ounterfeit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language