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whatchamacallit

[hwuhch-uh-muh-kawl-it, hwoch-, wuhch-, woch-]
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noun
  1. whachamacallit.
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Also what-do-you-call-it [hwuhd-uh-yuh-kawl-it, hwod-, wuhd-, wod-] /ˈʰwʌd ə yəˌkɔl ɪt, ˈʰwɒd-, ˈwʌd-, ˈwɒd-/.

whachamacallit

or what·cha·ma·call·it, what-you-may-call-it, what-do-you-call-it

[hwuhch-uh-muh-kawl-it, hwoch-, wuhch-, woch-]
noun Informal.
  1. an object or person whose name one does not know or cannot recall.
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Origin of whachamacallit

1940–45; spelling of what you may call it reflecting affrication of t before y and reduction of vowels; compare similar metric pattern and internal əmə in rigamarole, thingamagig
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for whatchamacallit

Historical Examples

  • "Whatchamacallit tastes good like a dum-dum cigarette should," Victor put in, in an attempt to settle the subject.

    You Don't Make Wine Like the Greeks Did

    David E. Fisher


Word Origin and History for whatchamacallit

n.

1928, compressed form of phrase "what you may call it." Earliest recorded variant is what-calle-ye-hym, attested from late 15c.

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Online Etymology Dictionary, © 2010 Douglas Harper