SENTRY


Meaning of SENTRY in English

/ ˈsentri; NAmE / noun

( pl. -ies ) a soldier whose job is to guard sth :

to be on sentry duty

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WORD ORIGIN

early 17th cent.: perhaps from obsolete centrinel , variant of sentinel .

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.