(nautical) The regular alternation in being on watch and off watch of the two watches into which a ship's crew is commonly divided.

On duty as a guard or lookout / Vigilant; alert.

Alternative form of on watch.

A portable or wearable timepiece. / The act of guarding and observing someone or something. / A particular time period when guarding is kept.

(idiomatic) To be careful or cautious; to pay attention to what one is doing (usually imperative).

The state or quality of being watchful; alertness, vigilance or wakefulness.

Fully observant, vigilant, or aware.

simple past tense and past participle of watch

Wearing a watch.

Third-person singular simple present indicative form of watch