ass2
Pronunciation: /ɑːs, as/
noun
North American vulgar slang
Phrases
-
bust one's ass
- try very hard to do something.
-
chew (someone's) ass
- reprimand (someone) severely.
-
drag (or tear or haul) ass
- hurry or move fast.
-
get your ass in (or into) gear
- hurry.
-
not give (or care) a rat's ass
- not care at all about something.
-
put (or have) someone's ass in a sling
- get someone in trouble.
-
whip (or bust) someone's ass
- beat someone in a fight or contest.

Origin:
variant of arse