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brake block

noun

Definitions

  1. One of two small blocks fitted to a brake caliper, which rub on the wheel rim when the…

    One of two small blocks fitted to a brake caliper, which rub on the wheel rim when the brake is applied.

  2. A block fitted to locomotives or rolling stock, which rubs on the steel tyre of the wheel…

    A block fitted to locomotives or rolling stock, which rubs on the steel tyre of the wheel when the brake is applied.

    • There are two brake blocks per wheel of the locomotive, and each brake block is actuated by its own cylinder, which obviates rigging (except to the hand parking brake).
    • Braking is by non-metallic brake blocks throughout, two to each wheel.

  3. A block (perhaps wooden) used for braking a horse-drawn vehicle.

The neighborhood

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sense glosses and etymology drawn from English Wiktionary · source · CC-BY-SA