Answer: thingamajig

AnswerCrossword Clue
THINGAMAJIGDoohickey
THINGAMAJIGGadget
THINGAMAJIGIndirect object?
THINGAMAJIGWhatever-it's-called
THINGAMAJIGIts name is forgotten
thingamajigsomething that is hard to classify or whose name is unknown or forgotten
thingamajiga gadget or other thing for which the speaker does not know or has forgotten the name.