Whatchamacallit meaning
Something whose name is unknown or forgotten.
noun
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.
noun
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Origin of whatchamacallit
- Alteration of what you may call it
From American Heritage Dictionary of the English Language, 5th Edition
- Shortened version of "what you may call it" or "what you might call it".
From Wiktionary