Definition of guard verb from the Oxford Advanced Learner's Dictionary

      

    guard

     verb
    verb
    BrE BrE//ɡɑːd//
     
    ; NAmE NAmE//ɡɑːrd//
     
    Verb Forms present simple I / you / we / they guard
    BrE BrE//ɡɑːd//
     
    ; NAmE NAmE//ɡɑːrd//
     
    he / she / it guards
    BrE BrE//ɡɑːdz//
     
    ; NAmE NAmE//ɡɑːrdz//
     
    past simple guarded
    BrE BrE//ˈɡɑːdɪd//
     
    ; NAmE NAmE//ˈɡɑːrdɪd//
     
    past participle guarded
    BrE BrE//ˈɡɑːdɪd//
     
    ; NAmE NAmE//ˈɡɑːrdɪd//
     
    -ing form guarding
    BrE BrE//ˈɡɑːdɪŋ//
     
    ; NAmE NAmE//ˈɡɑːrdɪŋ//
     
     
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  1. 1  guard somebody/something to protect property, places or people from attack or danger The dog was guarding its owner's luggage. political leaders guarded by the police You can't get in; the whole place is guarded. (figurative) a closely guarded secret
  2. 2  guard somebody to prevent prisoners from escaping The prisoners were guarded by soldiers.
  3. Word Origin late Middle English (in the sense ‘care, custody’): from Old French garde (noun), garder (verb), of West Germanic origin. Compare with ward.Extra examples He was under instructions to guard the key with his life. She jealously guarded her position of power. The military base is closely guarded. The mountain pass is well guarded. They guard the city against attack. a bird carefully guarding its eggs pop stars who need to be guarded from their fans strictly guarded privacy tightly guarded privacy Delegates at the conference were guarded by the police. The dog was guarding its owner’s luggage. The recipe is a closely guarded secret. You can’t get in; the whole place is guarded. Phrasal Verbsguard against something
See the Oxford Advanced American Dictionary entry: guard