to stand watch; to stand guard; to look out
to open (one's eyes) wide
交代で見張る役を務めた。
We took turns standing watch.
夜通し敵の動きを見張っていた。
I watched for enemy movements throughout the night.
警備員が一晩中、倉庫の入口を見張った。
The security guard stood watch at the warehouse entrance all night.