- One who watches or guards; specifically (Mil.), a soldier
set to guard an army, camp, or other place, from surprise, to observe
the approach of danger, and give notice of it; a sentry. - Watch; guard. - A marine crab (Podophthalmus vigil) native of the Indian
Ocean, remarkable for the great length of its eyestalks; -- called also
sentinel crab.
2 . Sentinel
[ v. t.]
- To watch over like a sentinel. - To furnish with a sentinel; to place under the guard
of a sentinel or sentinels.