a period of time (4 or 2 hours) during which some of a ship's crew are on duty
"The captain assigned me to an afternoon watch so he could rest before the storm hit."
the period during which someone (especially a guard) is on duty
"The night watch ended just as the first rays of dawn appeared over the horizon."
A portable or wearable timepiece.
"She adjusted her watch to make sure she wouldn't be late for the meeting."
In plain English: A watch is a small device you wear on your wrist to tell time.
"I left my watch on the table by mistake."
follow with the eyes or the mind
"Keep an eye on the baby, please!"
"The world is watching Sarajevo"
"She followed the men with the binoculars"
To look at, see, or view for a period of time.
"We spent the whole afternoon watching the clouds drift across the sky."
In plain English: To watch means to look at something carefully for a period of time.
"She likes to watch television in the evening."
Usage: Use "watch" when observing something that moves or changes over time, such as sports events or movies. Do not use it to describe simply looking at an object without motion; instead, choose the verb "look at."
The word watch entered English as a noun during the Middle English period, evolving directly from the Old English term wæċċe. Its original meaning remained consistent with its current use to denote a period of keeping guard or observation.