what·​cha·​ma·​call·​it | \ ˈhwä-chə-mə-ˌkȯ-lət How to pronounce whatchamacallit (audio) , ˈwä-, ˈ(h)wə- How to pronounce whatchamacallit (audio) \
plural whatchamacallits

Definition of whatchamacallit

: something that is hard to classify or whose name is unknown or forgotten : thingamajig … dozens of multi-colored plastic thingies, metal gizmos in various shapes and a rubber whatchamacallit with a hole in the middle.— Dick Wolfsie Joni had reached the point in her life when the wrong words flew out of her mouth. And when she tried to find the correct word, it inexplicably vanished. "Where's the whatchamacallit?"PRWeb.com

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Examples of whatchamacallit in a Sentence

I can't find the whatchamacallit that holds the door open. I need one of those whatchamacallits to connect the two patch cords.

First Known Use of whatchamacallit

1910, in the meaning defined above

History and Etymology for whatchamacallit

alteration of what you may call it

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The first known use of whatchamacallit was in 1910

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English Language Learners Definition of whatchamacallit

US, informal : something whose name you have forgotten or do not know

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showing courage and determination

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