Sentinel

noun

/ˈsɛntɪnəl/

Word Frequency: 1.6

Definitions

1.nounA sentry, watch, or guard.

2.nounA private soldier.

3.nounA unique string of characters recognised by a computer program for processing in a special way; a keyword.

"The tag is a sentinel that suspends web-page processing and displays the subsequent text literally."

4.nounA sentinel crab.

5.nounA sign of a health risk (e.g. a disease, an adverse effect).

"sentinel animals can be used to explore endemic diseases."

6.verbTo watch over as a guard.

"He sentineled the north wall."

7.verbTo post as guard.

"He sentineled him on the north wall."

8.verbTo post a guard for.

"He sentineled the north wall with just one man."

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