verb / noun
watch
WAHCH/wɑːtʃ/
To observe attentively over time, especially to guard against danger.
The birdwatcher watches a nearby bird with binoculars held low.

Etymology
Old English wæccan connected watching with staying awake. The meaning developed through being vigilant to keeping something under observation, linking attentive looking with sustained alertness.
In context
… go camping. And to watch her, if you were to go back and look at the history of the pictures, to watch her grow
More examples
- Please watch the soup so it doesn't boil over.
- Her watch ends at dawn.
- The neighborhood watch reports suspicious activity to the police.
Forms
watch · watches · watched · watching
watchful adjective — Alert to possible danger or trouble.
watcher noun — A person who observes something attentively.