American English

Definition of arm verb from the Oxford Advanced American Dictionary

     

    arm

     verb
    verb
    NAmE//ɑrm//
     
    Verb Forms present simple I / you / we / they arm
     
    he / she / it arms
     
    past simple armed
     
    -ing form arming
     
     
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  1. 1 [intransitive, transitive] to provide weapons for yourself/someone in order to fight a battle or a war arm yourself/somebody (with something) The men armed themselves with sticks and stones. The country was arming itself against the enemy. (figurative) She had armed herself for the meeting with all the latest statistics. see also armed
  2. 2[transitive] arm something to make a bomb, etc. ready to explode compare disarm
See the Oxford Advanced Learner's Dictionary entry: arm