master cylinder

Noun
  1. A cylinder that contains brake fluid that is compressed by a piston (synset 102893237)
    is a type of: cylinder, piston chamber - a chamber within which piston moves
    is a part of: hydraulic brake, hydraulic brakes - brake system in which a brake pedal moves a piston in the master cylinder; brake fluid then applies great force to the brake pads or shoes
    same as: brake cylinder, hydraulic brake cylinder

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