The Inner Workings of a Timepiece

This page is the CodyCross answer for the clue below from Popcorn Time, Group 385, Puzzle 5 (Screenwriting).

Question is: The Inner Workings of a Timepiece

and the answer is: CLOCKWORK

Word Meaning:

CLOCKWORK — A mechanism powered by a coiled spring and regulated by some form of escapement; the power is transmitted through toothed gearwheels and used to drive a mechanical clock, toy, or other device.

Definitions from Wiktionary.