(Cockney rhyming slang) bum (behind, bottom).

(simile) stone deaf (unable to hear at all)

(now offensive) Deaf and not able to speak.

Indicates that one is deaf.

(genetics) A mutation in mice that causes hearing loss and a waddling gait.

Used other than figuratively or idiomatically: see are, you, deaf. / (idiomatic, sarcastic) A rhetorical question asked to confront a nondeaf interlocutor who has failed to hear something.

plural of deaf-mute

(UK, offensive) A hearing aid. / (UK, offensive) A person wearing a hearing aid. / (television, slang) A presenter's earpiece through which they receive instructions from the studio.

(simile) stone deaf (unable to hear at all)

Having inattentional deafness; not being able to hear things that are within earshot