Definition of "thingumajig" []

• Any object whose name one does not know or cannot remember. (noun)

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• "The thingumajig that is supposed to turn it off has got broken or something and it keeps pumping water all over where I don't want it to."
• "She had been built for canvas and oil-lamps, and this new thingumajig that kept her nose snoring at eight knots when normally she was able to boil along at ten, and these unblinking things they called lamps (that neither smoked nor smelled), irked and threatened to ruin her temper."
• "A reader called Sonia, who clearly reads too many fashion articles, wanted to know if anyone really knows what wassername will be wearing when she marries thingumajig."