bust (one's) ass

rude slang To work very hard. I've been busting my ass studying for this exam, so I really hope I get a good grade. We can't blow off Holly's party—she's been busting her ass cooking and cleaning and getting everything ready for company.

Common Names:

Name	Pronounced	Usage
MichÈLe	mee-SHEL	French
Jasmine	JAZ-min (English), zhas-MEEN (French)	English, French
Jakes	-	Basque
Ingmar	ING-mahr	Swedish
Ambra	-	Italian
Athanasia	-	Greek, Ancient Greek