Watchman

1.

(A man employed to look after an empty building, etc, especially at night) អ្នកចាំយាម
Example: A night watchman.

2.

(បច្ចេកទេស) អ្នកយាម

1.

One set to watch; a person who keeps guard; a guard; a sentinel.

2.

Specifically, one who guards a building, or the streets of a city, by night.