1. A machine, consisting of wheels moved by weights, so constructed that by a uniform vibration of a pendulum, it measures time, and its divisions, hours, minutes and seconds, with great exactness. It indicates the hour by the stroke of a small hammer on a bell.

The phrases, what o'clock is it? It is nine o'clock, seem to be contracted from what of the clock? It is nine of the clock.

2. A figure or figured work in the ankle of a stocking.