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power brake

an automotive brake set by pressure from some power source, as a compressed-air reservoir, in proportion to a smaller amount of pressure on the brake pedal.
Origin of power brake
First recorded in 1895-1900 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for power brake
Historical Examples
  • From outside in fabrication came the muffled clang of drill press and power brake, the sounds of the night shift.

    Felony James Causey

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