Ptarmigan
Ptar´mi`gan
| n. | 1. | (Zool.) Any grouse of the genus Lagopus, of which numerous species are known. The feet are completely feathered. Most of the species are brown in summer, but turn white, or nearly white, in winter. |
| Noun | 1. |  ptarmigan - large arctic and subarctic grouse with feathered feet and usually white winter plumage |