sentinel

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noun

A person or special body of persons assigned to provide protection or keep watch over, for example: guard, lookout, picket, protector, sentry, ward, watch. See awareness/unawareness, safety/danger.

n. 1. a soldier or guard whose job is to stand and keep watch.

2. an electronic device designed to detect danger: an electronic sea sentinel to provide early warnings of storms.

3. a military watchtower for defense of a camp or city wall: sentinel towers of medieval period.

station a soldier or guard by (a place) to keep watch.

stand sentinel (of a soldier) keep watch:

See the Introduction, Abbreviations and Pronunciation for further details.

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A recording mechanism, such as an animal, a farm or a veterinarian, posted explicitly to record a possible occurrence or series of occurrences in a prospective surveillance program.

• s. loop — a distended loop of small intestine associated with acute pancreatitis; visible in abdominal x-rays.

• General Technology - sentinel: tag
• Newspaper Names

Dansk (Danish)
n. - vagtpost, skildvagt
v. tr. - stå vagt ved

Nederlands (Dutch)
wachtpost

Français (French)
n. - sentinelle
v. tr. - monter la garde

Deutsch (German)
n. - Wache
v. - Wache stehen bei

Ελληνική (Greek)
n. - φρουρός, φύλακας

Italiano (Italian)
sentinella

Português (Portuguese)
n. - sentinela (m)

Русский (Russian)
часовой, охранять, ставить стражу

Español (Spanish)
n. - centinela
v. tr. - hacer guardia, estar de centinela

Svenska (Swedish)
n. - vaktpost

中文（简体）(Chinese (Simplified))
步哨, 哨兵, 警戒, 守卫

中文（繁體）(Chinese (Traditional))
n. - 步哨, 哨兵
v. tr. - 警戒, 守衛

한국어 (Korean)
n. - 보초, (컴퓨터) 감시 문자 (특정 정보의 시작, 끝이나 자기 테이프의 끝을 표시하는), 파수
v. tr. - 망보다, ~에 보초를 세우다, (물건을) 지키다

日本語 (Japanese)
n. - 歩哨, 衛兵, 番人, 標識
v. - 歩哨に立つ, 歩哨を立てる

العربيه (Arabic)
‏(الاسم) حارس, , خفير‏

עברית (Hebrew)
n. - ‮זקיף, שומר‬
v. tr. - ‮הציב זקיפים, עמד על המשמר (ספרותית)‬