/hwuch"euh meuh kawl'it, hwoch"-, wuch"-, woch"-/ , n. 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; sp. of what you may call it reflecting affrication of t before y and reduction of vowels; cf. similar metric pattern and internal ama in RIGAMAROLE, THINGAMAGIG ]