jackass

A male ass or donkey.

A foolish or stupid person; a blockhead.

A male ass; a jack.

Hence A very stupid or ignorant person: used in contempt.

Nautical, same as hawse-bag.

The male ass; a donkey.

A conceited dolt; a perverse blockhead; — disparaging and offensive.

a three-masted vessel, with only the foremast square-rigged; a barkentine.

the koba.

See Jack rabbit, under 2d Jack, n.