noun
something trivial which is hard to classify or whose name is unknown
wondered what the little round doodad was for
Synonyms: business, dingus, dofunny, doohickey, gadget, gizmo, ||hootenanny, jigger, rigamajig, thingum, thingumajig, thingumbob, thingummy; compare gadget 1, what- do -you- call -it