This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. One that keeps guard; a sentry.

v. To watch over as a guard.

v. To provide with a guard.

v. To post as a guard.

n. A sentry or guard.

n. a unique string of characters recognised by a computer program for processing in a special way; a keyword.

v. To watch over as a guard.

v. To post as guard.

v. To post a guard for.

n. 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.

n. Watch; guard.

n. A marine crab (Podophthalmus vigil) native of the Indian Ocean, remarkable for the great length of its eyestalks; -- called also sentinel crab.

v. To watch over like a sentinel.

v. To furnish with a sentinel; to place under the guard of a sentinel or sentinels.

n. Watch or guard kept by a soldier stationed for the purpose at a particular place.

n. A soldier stationed as a guard, either to challenge persons drawing near and to allow to pass only those who give a watchword, and, in the absence of this, to resist them and give an alarm, or for display or ceremony only.

n. A sentinel-crab.

Acting as a sentinel; watching.

To watch over as a sentinel.

To furnish with a sentinel or sentinels; place under the guard of sentinels.

n. a person employed to keep watch for some anticipated event

"I do have a veterinarian friend who has what he calls a sentinel cat."

sentineled    sentineling    sentinelled    sentinelling    sentinels   

watchman    watcher    security guard   

sentinel crab   

sentineled    sentinelled    sentineling    sentinelling   

sentry    watch    guard   

sentry    watchman    guardian    watcher    outpost    guard    policeman    picket    fortress    horseman