A thing (used in a vague way to refer to something whose name one cannot recall)
What does this doohickey do?
Syn: dohickey, dojigger, doodad, doodah, gimmick, gismo, gizmo, gubbins, hickey, kajigger, thingamabob, thingmabob, thingumabob, thingummabob, thingamajig, thingmajig, thingumajig, thingummajig, thingummy, thingy, whatsit, whaddayacallit, whatchamacallit, da kine
Wikipedia foundation.