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

     

    frost

     verb
    verb
    BrE BrE//frɒst//
     
    ; NAmE NAmE//frɔːst//
     
    Verb Forms present simple I / you / we / they frost
    BrE BrE//frɒst//
     
    ; NAmE NAmE//frɔːst//
     
    he / she / it frosts
    BrE BrE//frɒsts//
     
    ; NAmE NAmE//frɔːsts//
     
    past simple frosted
    BrE BrE//ˈfrɒstɪd//
     
    ; NAmE NAmE//ˈfrɔːstɪd//
     
    past participle frosted
    BrE BrE//ˈfrɒstɪd//
     
    ; NAmE NAmE//ˈfrɔːstɪd//
     
    -ing form frosting
    BrE BrE//ˈfrɒstɪŋ//
     
    ; NAmE NAmE//ˈfrɔːstɪŋ//
     
     
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  1. 1[transitive, intransitive] to cover something or to become covered with a thin white layer of ice frost something (over/up) The mirror was frosted up. frost (over/up) The windows had frosted over.
  2. 2[transitive] frost something (especially North American English) to cover a cake with icing / frosting
  3. Word Origin Old English frost, forst, of Germanic origin; related to Dutch vorst and German Frost, also to freeze.
See the Oxford Advanced American Dictionary entry: frost