to look at or observe attentively over a period of time.

to pay attention or keep an eye on something.

ध्यान रखना

English Usage: Please watch your step on the stairs.

Hindi Usage: कृपया सीढ़ियों पर अपने कदमों पर ध्यान दें।

a small timepiece worn typically on a strap on the wrist.

a device used for observing or monitoring something.

निगरानी उपकरण

English Usage: The security guard had to watch the monitors carefully.

Hindi Usage: सुरक्षा गार्ड को मॉनिटर्स को सावधानी से देखना पड़ा।