특정 지점에서 감시를 하거나 출입을 통제하기 위해 배치된 군인이나 경비원
A soldier or guard stationed at a specific point to keep watch, prevent unauthorized access, or warn of danger.
예문:
"The sentry stood motionless at the palace gates, ignoring the curious tourists."
"Soldiers were assigned to sentry duty to protect the ammunition depot overnight."
"A lone sentry spotted the approaching enemy fleet and immediately sounded the alarm."