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whatchamacallit1928, compressed form of phrase "what you may call it." What-do-you-call-it is from 1630s. Earliest recorded variant is what-calle-ye-hym, attested from late 15c. What's-his-name for &q [..]
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whatchamacallitnoun Definition: another word for an unknown item Word History: Mrs. F.Example Sentence: That's a whatchamacallit!
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whatchamacallitNoun. Something whose name escapes one.
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whatchamacallit(n) something unspecified whose name is either forgotten or not known
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