cock a deaf 'un

== English == === Pronunciation === IPA(key): /ˌkɒk ə ˈdɛf ən/ === Verb === cock a deaf 'un (third-person singular simple present cocks a deaf 'un, present participle cocking a deaf 'un, simple past and past participle cocked a deaf 'un) (UK, intransitive, slang) To turn a deaf ear; to refuse to listen, or pretend not to have heard. ==== Related terms ==== cloth-eared