Inflected forms: pl. ass·es ( sz) 1. Any of several hoofed mammals of the genus Equus, resembling and closely related to the horses but having a smaller build and longer ears, and including the domesticated donkey. 2. A vain, self-important, silly, or aggressively stupid person.
ETYMOLOGY:
Middle English asse, from Old English assa, perhaps of Celtic origin, ultimately from Latin asinus.