Noah Webster
Clock
CLOCK, noun
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 oclock is it? It is nine oclock, 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.
CLOCK, verb transitive To call. [See Cluck.]