Middle English cootepossibly from Middle Dutch coet
American Heritage Dictionary of the English Language, 5th Edition
Coot Sentence Examples
Get your ass down here and drag this old coot home!
Texas has also the American coot or mud-hen and the pelican.
Forbes, namely, a true species of raven (Palaeocorax moriorum), a remarkable rail (Diaphorapteryx), closely related to the extinct Aphanapteryx of Mauritius, and a large coot (Palaeolimnas chathamensis).
bald as a coot.
Did the ghost show up? He cackled like old coot he was.