Definition of pintail
: a bird having elongated central tail feathers; especially : a slender duck (Anas acuta) of the northern hemisphere with the male having a brown head, a white breast with a white line continuing up the side of the neck, and chiefly gray upperparts
First Known Use of pintail
Learn More about pintail
Britannica.com: Encyclopedia article about pintail
Seen and Heard
What made you want to look up pintail? Please tell us where you read or heard it (including the quote, if possible).