Definition of "whatchamacallits" [whatchamacallits]

• Plural form of whatchamacallit. (noun)

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• "You know how it works: the ins, the outs, the whatchamacallits."
• "We should all raise a glass and toast each other as we watch the Redskins take on the whatchamacallits on Sunday."
• "They were watch winders, elegant boxes that opened to reveal velvet, er, whatchamacallits—things maybe?"