I.
noun ( informal )
1 ( BrE ) person's bottom
ADJECTIVE
▪ big
▪ bare
VERB + BUM
▪ feel , pinch
▪
A man pinched her ~ on the train so she hit him.
▪ sit on
▪
They've been sitting on their ~s all day, doing nothing.
PHRASES
▪ put ~s on seats
▪
The tennis stars' animosity was a publicity stunt, aimed at putting ~s on seats.
2 ( esp. AmE ) lazy/useless person
ADJECTIVE
▪ lazy
▪ drunken
▪ beach , ski
▪
He dropped out of college and became a beach ~.
II.
verb
Bum is used with these nouns as the object: ↑ cigarette , ↑ ride
III.
adj.
Bum is used with these nouns: ↑ knee