sentinel Hear it!

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

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