- The definition of a jackass is a person who is stupid, foolish or offensive, or a male donkey.
An idiot guy who shouts heckles at a wedding and who generally makes a fool of himself wherever he goes is an example of a jackass.
A jackass, ass, or donkey.
jackass definition by Webster's New World
- a male donkey
- a stupid or foolish person; nitwit
Origin: jack- plush ass
jackass definition by American Heritage Dictionary
- A male ass or donkey.
- A foolish or stupid person; a blockhead: “You've acted like an irrational jackass and it's time you stopped” (Margaret Truman).