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- ]
/ ˈʰwʌtʃ ə məˌkɔl ɪt, ˈʰwɒtʃ-, ˈwʌtʃ-, ˈwɒtʃ- /
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noun Informal.

an object or person whose name one does not know or cannot recall.

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

Definition for what-do-you-call-it (2 of 2)

whatchamacallit

[ hwuhch-uh-muh-kawl-it, hwoch-, wuhch-, woch- ]
/ ˈʰwʌtʃ ə məˌkɔl ɪt, ˈʰwɒtʃ-, ˈwʌtʃ-, ˈwɒtʃ- /

noun

Also what-do-you-call-it [hwuhd-uh-yuh-kawl-it, hwod-, wuhd-, wod-] /ˈʰwʌd ə yəˌkɔl ɪt, ˈʰwɒd-, ˈwʌd-, ˈwɒd-/.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for what-do-you-call-it

Word Origin and History for what-do-you-call-it

whatchamacallit


n.

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

Online Etymology Dictionary, © 2010 Douglas Harper