(vulgar) arse, posterior, buttocks

(derogatory) arse (mean or dispicable person)

(vulgar, informal) Intensifies nouns and adjectives.

For non-idiomatic uses see am and Arsch / broken; fucked

(colloquial, vulgar) my arse; my foot

(idiomatic, vulgar, reflexive) to bust one's ass, to work one's ass off (to work very hard) / (idiomatic, vulgar, transitive) to bust someone's ass (to make someone work very hard)

(vulgar) A remarkably stupid person.

(with dative, mildy vulgar) not to bother one at all (expresses English not to give a damn and the like)

(vulgar) bumfuck, middle of nowhere

(vulgar) kiss my ass