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sentinel definition

sen·ti·nel (sent′'n əl)

noun

a person or animal set to guard a group; specif., a sentry

Etymology: Fr sentinelle < It sentinella, ult. < L sentire, to feel, sense

transitive verb sentineled -·neled or sentinelled -·nelled, sentineling -·nel·ing or sentinelling -·nel·ling

  1. to guard or watch over as a sentinel
  2. to furnish or protect with a sentinel
  3. to post as a sentinel

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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