Synonym: lookout, lookout man, picket, scout, sentinel, spotter, watch. Similar words: sentimental, resentment, presentiment, sententiously, sentiment, sentient, entry, gentry. Meaning: ['sentrɪ] 
n. a person employed to watch for something to happen.
n. a person employed to watch for something to happen. 
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1 The sentry defended the gate against sudden attack.
2 The sentry gave a smart salute and waved us on.
3 The sentry would not let her enter.
4 The sentry cried "Halt" as he saw us.
5 People approaching the gate were challenged by the sentry.
6 The officer detailed a man for sentry duty.
7 The sentry sprang to attention.
8 The sentry challenged the stranger at the gates.
9 My squad were on sentry duty last night.
10 They often stood sentry on snowy nights.
11 A sentry checked the ID card's authenticity then activated the electronic turnstile.
12 The sentry guard dived into his foxhole and closely observed the stranger towards him.
13 The sentry made straight for him with a drawn sword.
14 I'll have to beg Jim off from sentry duty[sentencedict.com],[www.Sentencedict.com] he's sick.
15 We drove slowly to where a sentry stood.
16 Even the best sentry lost concentration.
17 The sentry sat hugging his rifle.
18 The sentry on duty shot him through the head.
19 Scattered farmhouses, sentry telephone poles, and budding green fields flanked them on each side.
20 Or stroll up to one of the distinctive sentry boxes, aligned so defenders could harass would-be invaders with a withering cross-fire.
21 Old cypress trees rose up in silent sentry this afternoon, and the entrance to the tomb looked shut.
22 The sentry on the western side sat huddled in a blanket until the pressure on his bladder became uncomfortable.
23 If you wish to succeed, you should use persistence as your good friend, experience as your reference, prudence as your brother and hope as your sentry. 
24 The club entrance was dark; there was no guard in the sentry box, and the gate was open.
25 Soldiers set up barbed-wire fences, electricians wired up searchlights, carpenters built barracks and sentry boxes on elevated platforms.
26 Vechey's corpse lay in the centre of the tower near a rickety hut, formerly used by guards on sentry duty.
27 In the grounds of the hotel used as an Axis headquarters, he heard a sentry yawn but found no guns.
28 I was afraid I might be shot by a startled sentry.
29 They even set up a neat military system of two-man sentry duties, to make sure they stayed alert.
30 On the top was a pole wrapped in straw which could be ignited by the cossack sentry in case of enemy incursion.
More similar words: sentimental, resentment, presentiment, sententiously, sentiment, sentient, entry, gentry, absent, resent, assent, centre, dissent, consent, present, entreat, entropy, central, sentinel, absentee, sentence, entrench, entrails, entreaty, entrance, at present, senescent, essential, presented, presenter.