Dictionary

1sentinel

noun sen·ti·nel \ˈsent-nəl, ˈsen-tə-nəl\

Definition of SENTINEL

:  sentry
ADVERTISEMENT

Examples of SENTINEL

  1. <a lone sentinel kept watch over the fort>

Origin of SENTINEL

Middle French sentinelle, from Old Italian sentinella, from sentina vigilance, from sentire to perceive, from Latin
First Known Use: 1579

Other Military Terms

bivouac, logistics, petard, salient, sally, supernumerary, tactical

2sentinel

transitive verb
sentineled or sentinelledsentinel·ing or sentinel·ling

Definition of SENTINEL

1
:  to watch over as a sentinel
2
:  to furnish with a sentinel
3
:  to post as sentinel

First Known Use of SENTINEL

1593

Other Military Terms

bivouac, logistics, petard, salient, sally, supernumerary, tactical
SENTINELED Defined for Kids

sentinel

noun sen·ti·nel \ˈsen-tə-nəl\

Definition of SENTINEL for Kids

:  sentry
Medical Dictionary

sentinel

adjective sen·ti·nel \ˈsent-ən-əl\

Medical Definition of SENTINEL

:  being an individual or part of a population potentially susceptible to an infection or infestation that is being monitored for the appearance or recurrence of the causative pathogen or parasite

Browse

Next Word in the Dictionary: sentinel crabPrevious Word in the Dictionary: sentimoAll Words Near: sentinel
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears