A jack and an ace as a starting hand in Texas hold 'em.
A male donkey.
A foolish or stupid person.
An inappropriately rude or obnoxious person.
A kind of bootleg liquor.
To behave very obnoxiously.
A European sword with a long, straight double-edged blade, a cruciform hilt, and a grip for two-handed use; prevalent from the 14th to 16th centuries.
Any type of sword that is comparatively long; depending on context, applied to swords of the Bronze Age, Migration period, Viking Age and Renaissance era.