Escapement

Word Dictionary -> Escapement

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Escapement

(n.) The act of escaping; escape.
(n.) Way of escape; vent.
(n.) The contrivance in a timepiece which connects the train of wheel work with the pendulum or balance, giving to the latter the impulse by which it is kept in vibration; -- so called because it allows a tooth to escape from a pallet at each vibration.