adjective, noun, verb
adjective (BrE, informal) useless; that does not work as it should:
He sold me a duff radio.
noun (AmE, informal) a person's bottom:
Are you just going to sit around on your duff all day?
词性: verb
PHRASALVERBS
duff sb<->up (BrE, informal) to hit or kick sb severely
SYNBEATUP
