ptarmigan

Từ điển WordNet v3.1 - WordNet Dictionary

noun

large Arctic and subarctic grouse with feathered feet and usually white winter plumage
• Hypernyms:
grouse
• Hyponyms:
red grouse, moorfowl, moorbird, moor-bird, moorgame, Lagopus scoticus
• Member Holonyms:
Lagopus, genus Lagopus