watch
UK: wɒtʃ | US: wɑːtʃ
n. a small timepiece worn on the wrist or carried in a pocket
vt. to look at or observe attentively over a period of time
vi. to be vigilant or alert
The word "watch" originates from Old English wæccan ("to be awake, keep vigil"), derived from Proto-Germanic wakjaną ("to wake"). The sense of "observing time" emerged in the 14th century with the invention of portable timekeeping devices. The morpheme wat preserves the core idea of vigilance, while -ch evolved as a suffix for both noun and verb forms.
She glanced at her watch to check the time.
The security guard watches the building overnight.
Watch carefully as I demonstrate the technique.
He gifted her a luxury watch for her birthday.
Birds often watch for predators before feeding.