名詞 ptarmigan:

1. large arctic and subarctic grouse with feathered feet and usually white winter plumage

ptar.mi.gan

n.（名詞）
【復(fù)數(shù)】 ptarmigan 或 ptar.mi.gans
Any of various grouses of the genusLagopus, 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.
雷鳥：任一種雷鳥屬 的松雞，棲息在北極、亞北極和北半球的高山地區(qū)，有覆有羽毛的腿和爪，全身羽毛在夏天是棕色或灰色的，在冬天是白色的

來源：
Alteration influenced by the spelling pt in Greek words like pteron [wing]
受希臘語單詞 pt 在希臘文字中象 pteron [翅膀]
of Scottish Gaelic tàrmachan
蘇格蘭的蓋爾語 tàrmachan的變化