An aborigine.
A nickname used instead of the male given name Jack, Jacques (and its cognates) or John.
A diminutive of the female given name Jacqueline.
A male donkey.
A foolish or stupid person.
An inappropriately rude or obnoxious person.
A jack and an ace as a starting hand in Texas hold 'em.
A kind of bootleg liquor.
To behave very obnoxiously.