Whatchamacallit Definition

wŏchə-mə-kôlĭt, wŭch-, hwŏch-, hwŭch-
noun
Something whose name is unknown or forgotten.
American Heritage
Webster's New World

A metasyntactic term used for any object whose actual name you don't know or can't remember. There are many spellings and many synonyms.

Wiktionary

Other Word Forms of Whatchamacallit

Noun

Singular:
whatchamacallit
Plural:
whatchamacallits

Origin of Whatchamacallit

  • Shortened version of "what you may call it" or "what you might call it".

    From Wiktionary

  • Alteration of what you may call it

    From American Heritage Dictionary of the English Language, 5th Edition

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whatchamacallit