whatchamacallit
- n something unspecified whose name is either forgotten or not known
- Anyone who has ever tried to explain that he wants a thingamajig that goes on the end of a doohickey understands the problem of trying to get a whatchamacallit in a foreign .
- Lorillard advertising refers to the cigarette as the "whatchamacallit.
- It seemed to be just the place to house Electra's collection of dolls, dollhouses and, in fact, of every last thingumajig and whatchamacallit ever made in early America.