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English definition of “what's-his-name”

what's-his-name

noun [S] (also whatsisname)     /ˈwɒts.ɪz.neɪm/ US  /ˈwɑːts-/ informal
used for referring to a man or boy when you cannot remember or do not know his name : Have you invited Mike Whatsisname to the party ?Names and titles
(Definition of what's-his-name noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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