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English definition of “guard”

guard

noun     /ɡɑːd/
PROTECT [C] B1 someone whose job is to make certain someone does not escape or to protect a place or another person : a security guard prison guards Occupations and tradesPrisons and parts of prisons
SOLDIERS [no plural] a group of soldiers or police officers who are protecting a person or place Occupations and tradesProtection and protectorsEnvironmental issuesParts of armies and groups of servicemen
TRAIN [C] (also conductor) someone who is in charge of a train Occupations and tradesRailway workers
THING [C] something that covers or protects someone or something: a fire guard Protection and protectorsEnvironmental issues
be on guard; stand guard to be responsible for protecting a place or a person : Armed police stood guard outside the house .Defending and protectingBacking, supporting and defendingPreserving and saving
be under guard to be kept in a place by a group of people who have weapons : The suspect is now under guard in the local hospital .Defending and protectingBacking, supporting and defendingPreserving and saving
(Definition of guard noun from the Cambridge Learner's Dictionary © Cambridge University Press)

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