American English

Definition of frost verb from the Oxford Advanced American Dictionary



    Verb Forms present simple I / you / we / they frost
    he / she / it frosts
    past simple frosted
    -ing form frosting
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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 to cover a cake, etc with frosting
See the Oxford Advanced Learner's Dictionary entry: frost