Meaning of “thingamabob” in the English Dictionary

british dictionary

"thingamabob" in British English

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thingamabobnoun [ C ]

uk /ˈθɪŋ.ə.mə.bɒb/ us /ˈθɪŋ.ə.mə.bɑːb/ also thingamajig, , UK also thingummy, informal

a word used, especially in spoken English, when the name of an object has been forgotten:

I need one of those red thingamabobs for this - Do you have one?
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(Definition of “thingamabob” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)