coot
/kuːt/noun
1
- （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, 白骨顶。
1.1
- 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。
2
- （常作 old coot）informal, chiefly N. Amer. a stupid or eccentric person, typically an old man〈非正式, 主北美〉（尤指年老的）傻瓜; 怪人。
词源
Middle English: probably of Dutch or Low German origin and related to Dutch koet.