Sentinels

noun

Word Frequency: 0.4

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."

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