clockwork
n. uncountablen. the inner parts of a clock or watch that make it work. It is also used to describe a system that works perfectly and regularly.
n. the internal mechanism of a clock or watch, consisting of a system of gears and springs. Often used metaphorically to describe a process that functions with extreme regularity and precision.
The old toy still runs on a simple clockwork mechanism.
The logistics team managed the entire event like clockwork, ensuring every speaker started exactly on time.
Restoring the antique timepiece required a steady hand and a deep understanding of eighteenth-century clockwork, as many of the original brass gears had worn thin.
From clock + -work.
Often used in the prepositional phrase 'like clockwork' to describe a reliable or predictable event.