[1] : The Collaborative International Dictionary of English v.0.48

sentinel \sen"tinel\, 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
see also:
sentineled sentinelled sentineling sentinelling 

[2] : The Collaborative International Dictionary of English v.0.48

sentinel \sen"tinel\, 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. zool. a marine crab podophthalmus vigil native of
      the indian ocean, remarkable for the great length of its
      eyestalks; -- called also sentinel crab.
      1913 webster
see also:
sentry podophthalmus vigil sentinel crab 

[3] : WordNet (r) 2.0

sentinel
     n : a person employed to watch for something to happen syn: lookout,
          lookout man, sentry, watch, spotter, scout, picket
see also:
lookout lookout man sentry watch spotter scout 
picket 

[4] : U.S. Gazetteer (1990)

sentinel, ok city, fips 66400
  location: 35.15661 n, 99.17347 w
  population 1990: 960 492 housing units
  area: 1.5 sq km land, 0.0 sq km water
  zip codes: 73664

[5] : U.S. Gazetteer Places (2000)

sentinel, ok -- u.s. town in oklahoma
   population 2000:    859
   housing units 2000: 411
   land area 2000:     0.614016 sq. miles 1.590293 sq. km
   water area 2000:    0.000000 sq. miles 0.000000 sq. km
   total area 2000:    0.614016 sq. miles 1.590293 sq. km
   fips code:            66400
   located within:       oklahoma ok, fips 40
   location:             35.156659 n, 99.173829 w
   zip codes 1990:     73664
   note: some zip codes may be omitted esp. for suburbs.
   headwords:
    sentinel, ok
    sentinel

Sentinel >> S Words
Sentinel, definition of term: Sentinel
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