watch over
To guard and protect.
She stayed up all night to watch over the sick infant.
noun
A portable or wearable timepiece.
Meronyms: watch face, watch receiver, watchspring, watch battery, watchstrap, watch strap, watchband
More people today carry a watch on their wrists than in their pockets; some people today don't use a watch at all, because their smartphone serves the purpose well enough.
The act of guarding and observing someone or something.
shepherds keeping watch by night
All the long night their mournful watch they keep.
A particular time period when guarding is kept.
The second watch of the night began at midnight.
I did stand my watch upon the hill.
A period of wakefulness between the two sleeps of a biphasic sleep pattern (the dead sleep or first sleep and morning sleep or second sleep): the first waking.
A person or group of people who guard.
The watch stopped the travelers at the city gates.
Pilate said unto them, Ye have a watch; go your way, make it as sure as ye can.
verb
To look at, see, or view for a period of time.
Watching the clock will not make time go faster.
I'm tired of watching TV.
To observe over a period of time; to notice or pay attention.
Watch this!
Put a little baking soda in some vinegar and watch what happens.
To mind, attend, or guard.
Please watch my suitcase for a minute.
He has to watch the kids that afternoon.
To be wary or cautious of.
You should watch that guy. He has a reputation for lying.
To attend to dangers to or regarding.
watch your head; watch your step
Watch yourself when you talk to him.