jackass

[jak-as] /ˈdʒækˌæs/
noun
1.
a male donkey.
2.
a contemptibly foolish or stupid person; dolt; blockhead; ass.
Origin
1720-30; jack1 + ass1
Related forms
jackassery, noun
British Dictionary definitions for jackass

jackass

/ˈdʒækˌæs/
noun
1.
a male donkey
2.
a stupid person; fool
3.
laughing jackass, another name for kookaburra
Word Origin
C18: from jack1 (male) + ass1
Word Origin and History for jackass
n.

mule ass, 1727, from jack (n.) + ass (n.1). Meaning "stupid person" is attested from 1823.

Slang definitions & phrases for jackass

jackass

noun

A stupid person; idiot; dolt; fool; lunkhead, shit-for-brains (1823+)