noun
swan that nests in tundra regions of the New and Old Worlds
• Syn: ↑Cygnus columbianus
• Hypernyms: ↑swan
• Hyponyms: ↑whistling swan, ↑Cygnus columbianus columbianus, ↑Bewick's swan, ↑Cygnus columbianus bewickii
• Member Holonyms: ↑Cygnus, ↑genus Cygnus
Useful english dictionary. 2012.