sentinel
The definition of a sentinel is a person or animal that keeps guard.
(noun)An example of a sentinel is a security worker.
To sentinel is defined as to watch over or to provide with a guard.
(verb)An example of sentinel is to keep watch over a museum at night.
See sentinel in Webster's New World College Dictionary
noun
Origin: Fr sentinelle < It sentinella, ult. < L sentire, to feel, sense
transitive verb sentineled or sentinelled, sentineling or sentinelling
- to guard or watch over as a sentinel
- to furnish or protect with a sentinel
- to post as a sentinel
See sentinel in American Heritage Dictionary 4
noun
- To watch over as a guard.
- To provide with a guard.
- To post as a guard.
Origin:
Origin: French sentinelle
Origin: , from Italian sentinella
Origin: , probably from Old Italian sentina, vigilance
Origin: , from sentire, to watch
Origin: , from Latin sentīre, to feel; see sent- in Indo-European roots
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