sentry box sentry board • sentry duty · · · Info · Definitions · Characters · · sentry box · · Text Common · · Latin · · Scripts 10 · · Length 3 · · Syllables Definitions · · · (noun) a small shelter with an open front to protect a sentry from the weather. Synonyms: sentry box. · · Noun Definition 1 Characters · · space U+0020 b latin small letter b U+0062 e latin small letter e U+0065 n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 x latin small letter x U+0078 y latin small letter y U+0079