- the small North American subspecies, Cygnus columbianus columbianus, of the tundra swan.
Origin of whistling swan
First recorded in 1775–85
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a white North American swan, Cygnus columbianus, with a black bill and straight neckCompare mute swan