岗亭

[ noun ]
a small shelter with an open front to protect a sentry from the weather
<noun.artifact>

Sentry \Sen"try\, n.; pl. {Sentires}. [Probably from OF.
senteret a little patch; cf. F. sentier path, and OF. sente.
See {Sentinel}.]
1. (Mil.) A soldier placed on guard; a sentinel.

2. Guard; watch, as by a sentinel.

Here toils, and death, and death's half-brother,
sleep,
Forms terrible to view, their sentry keep. --Dryden.

{Sentry box}, a small house or box to cover a sentinel at his
post, and shelter him from the weather.