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
EngİN	-	Turkish
Ptolemais	-	Ancient Greek
Gershom	GUR-shahm (English)	Biblical, Biblical Hebrew
Leroy	LEE-roi	English
Charla	SHAHR-lə	English
Adele	AH-de-lə (German), ə-DEL (English), AH-de-le (Finnish)	German, English, Italian, Finnish