ptarmigan definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
ptarmigan definition by American Heritage Dictionary
noun pl. ptarmigan ptarmigan or ptar·mi·gans
Any of various grouses 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.
Origin: Alteration (influenced by the spelling pt in Greek words like pteron, wing) of Scottish Gaelic tarmachan.
Variant of ptarmigan