Found 2 items, similar to sentinel.
English → English (WordNet) Definition: sentinel sentinel n : a person employed to watch for something to happen [syn: lookout, lookout man, sentry, watch, spotter, scout, picket]
English → English (gcide) Definition: Sentinel Sentinel \Sen"ti*nel\, v. t. [imp. & p. p. Sentineledor Sentinelled; p. pr. & vb. n. Sentineling or Sentinelling.] 1. To watch over like a sentinel. “To sentinel enchanted land.” [R.] --Sir W. Scott. [1913 Webster] 2. To furnish with a sentinel; to place under the guard of a sentinel or sentinels. [1913 Webster] Sentinel \Sen"ti*nel\, n. [F. sentinelle (cf. It. sentinella); probably originally, a litle path, the sentinel's beat,, and a dim. of a word meaning, path; cf. F. sente path. L. semita; and OF. sentine, sentele, senteret, diminutive words. Cf. Sentry.] 1. 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. [1913 Webster] The sentinels who paced the ramparts. --Macaulay. [1913 Webster] 2. Watch; guard. [Obs.] “That princes do keep due sentinel.” --Bacon. [1913 Webster] 3. (Zo["o]l.) A marine crab (Podophthalmus vigil) native of the Indian Ocean, remarkable for the great length of its eyestalks; -- called also sentinel crab. [1913 Webster]