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Meaning of gravity escapement

grav'ity escape"ment

Pronunciation: [key]
— Horol. Horol.
  1. an escapement, used esp. in large outdoor clocks, in which the impulse is given to the pendulum by means of a weight falling through a certain distance.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.