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slot car

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noun
  1. a miniature, electrically-operated toy racing car that runs on a slotted track and is controlled by an operator with a handheld rheostat.
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Origin of slot car

An Americanism dating back to 1965–70
Also called slot racer.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018