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
Meindert	-	Dutch
Sid	[sid]
Kishore	-	Indian, Hindi, Marathi, Tamil, Telugu
Antigone	[æn'tigəni:]
Lubna	-	Arabic
Sherif	-	Arabic