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sentinel

sen·ti·nel

sentinel

 
pronunciation:
sen t nl
parts of speech:
noun, transitive verb
part of speech: noun
definition: one that stands guard or watches; sentry.
The sentinel heard a noise and fired a warning shot.
similar words:
guard
 
part of speech: transitive verb
inflections: sentineled, sentineling, sentinels
definition: to keep watch over; guard.
similar words:
guard