Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun arse

2 senses of arse

Sense 1
buttocks, nates, arse, butt, backside, bum, buns, can, fundament, hindquarters, hind end, keister, posterior, prat, rear, rear end, rump, stern, seat, tail, tail end, tooshie, tush, bottom, behind, derriere, fanny, ass -- (the fleshy part of the human body that you sit on; "he deserves a good kick in the butt"; "are you going to sit on your fanny and do nothing?")
       => body part -- (any part of an organism such as an organ or extremity)

Sense 2
arse, arsehole, asshole, bunghole -- (vulgar slang for anus)
       => anus -- (the excretory opening at the end of the alimentary canal)