I. arse 1 /ɑːs $ ɑːrs/ BrE AmE noun [countable] British English spoken not polite
[ Language: Old English ; Origin: ærs , ears ]
1 . the part of your body that you sit on SYN ass American English
2 . a stupid and annoying person
3 . my arse! used to say that you do not believe something
4 . get off your arse used to tell someone to stop being lazy and start doing something
5 . shift/move your arse ( also get your arse into gear ) used to tell someone to hurry up
6 . not know your arse from your elbow to be stupid and confused about simple things
⇨ ↑ ass , ⇨ be a pain in the arse at ↑ pain 1 (3), ⇨ ↑ smart arse , ⇨ work your arse off at ↑ work 1 (30)
II. arse 2 BrE AmE verb British English spoken not polite
can’t/couldn’t be arsed (to do something) to not do something because you are feeling too lazy
arse about/around phrasal verb spoken not polite
to waste time behaving in a silly way instead of doing the things you should do