- dohickey, dojigger, doodad, doohickey, gimmick, hickey, gizmo, gismo, gubbins, thingamabob, thingumabob, thingmabob, thingamajig, thingumajig, thingmajig, thingummy - something whose name is either forgotten or not known
--1 is a kind of whatchamacallit, stuff, whatsis, sundry, sundries