(复同单)an aquatic bird of the rail family, with blackish plumage, lobed feet, and a bill that extends back on to the forehead as a horny shield 大(番鸟),白骨顶
Genus Fulica, family Rallidae: several species, in particular the widespread F. atra, which has a white bill and frontal shield 白骨顶属,秧鸡科: 数种,尤指喙呈白色,分布广泛的白骨顶
(常作 old coot)(informal, chiefly N. Amer.)a stupid or eccentric person, typically an old man (非正式,主 北美)(多为年老的)傻瓜;怪人
语源
Middle English: probably of Dutch or Low German origin and related to Dutch koet