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

plural of watchfulness

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

Alternative form of on watch.

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

plural of watching

present participle of watch

The act of one who watches.

Fully observant, vigilant, or aware.

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