Definition of THINGUMMY

a small article the actual name of which one either does not know or cannot remember <an antiques store filled with thingummies from the horse-and-buggy days>
Synonyms dingus, doohickey, hickey, thingamabob, thingamajig (or thingumajig), thingummy, whatchamacallit, whatnot, whatsit (also whatsis or what-is-it)

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