[hwuhch-uh-muh-kawl-it, hwoch-, wuhch-, woch-]
noun Informal.
an object or person whose name one does not know or cannot recall.
Also, whatchamacallit, what-you-may-call-it, what-do-you-call-it.

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

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