Definition: Definition: A small fried cake of sweetened dough, typically shaped like ring or, when prepared with a filling, a ball.
The handshape of the sign above is a classifier for the twisted donut. [Signed by Joanna Charpentier Witulski, Feb. 2017.]
There may be regional variations for 'donut'. This ASL sign is seen in regions across the U.S. and Canada.
It's an initialized sign in the 1970/1980s(?), some still used.