English version

whatchamacallit

From Longman Dictionary of Contemporary Englishwhatchamacallitwhat‧cha‧ma‧call‧it /ˈwɒtʃəməˌkɔːlɪt $ ˈwɑːtʃəməˌkɒːl-, ˈwʌtʃ-/ noun [countable] 🔊 🔊 spokenNAME OF A THING a word you use when you cannot remember the name of something 🔊 I’ve broken the whatchamacallit on my bag.
Examples from the Corpus
whatchamacallitNonsense words of the whatchamacallit type provide an extra resource to keep listeners informed of our word retrieval problems.The guy was wearing one of those whatchamacallits on his head.
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