coot
noun [ C ] uk/kuːt/ us/kuːt/
(BIRD)
白骨顶（一种生活在水边的黑色小水鸟）
a small, dark bird that lives near rivers and lakes
(PERSON)
US informal（尤指笨的）人，家伙
an old man who has an unusual or slightly crazy way of behaving
Let the old coot sleep - he's not going to help us anyway. 让这个老糊涂虫睡吧——他帮不上我们什么忙了。