/ Thesaurus / W Synonyms of whistling swan Find synonyms for: Noun1. whistling swan, Cygnus columbianus columbianus, tundra swan, Cygnus columbianususage: North American subspecies of tundra swan having a soft whistling noteWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: supine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language