hickey

¹hickey

noun

Definition of HICKEY

a small article the actual name of which one either does not know or cannot remember <I lost the hickey that locks and unlocks the car's doors by remote control>

Synonyms dingus, doohickey, hickey, thingamabob, thingamajig (or thingumajig), thingummy, whatchamacallit, whatnot, whatsit (also whatsis or what-is-it)