n. pl. ptarmigan or ptar·mi·gans
Any of various grouse of the genus Lagopus, inhabiting arctic, subarctic, and alpine regions of the Northern Hemisphere and having feathered legs and feet and plumage that is brown or gray in summer and white in winter.
[Alteration (influenced by the spelling pt in Greek words like pteron, wing) of Scottish Gaelic tarmachan.]
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Indo-European & Semitic Roots Appendices
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