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Definition of whatchamacallit noun from the Oxford Advanced Learner's Dictionary

whatchamacallit

noun
 
/ˈwɒtʃəməkɔːlɪt/
 
/ˈwʌtʃəməkɔːlɪt/
(informal)
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  1. used when you cannot think of the name of something
    • Have you got a whatchamacallit? You know… a screwdriver?
See whatchamacallit in the Oxford Advanced American Dictionary
trait
noun
 
 
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