American English

Definition of foam verb from the Oxford Advanced American Dictionary



    [intransitive]Verb Forms present simple I / you / we / they foam
    he / she / it foams
    past simple foamed
    -ing form foaming
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  1. 1(of a liquid) to have or produce a mass of small bubbles synonym froth
  2. 2 She looked down at the foaming white water. The toothpaste foamed in his mouth. tankards of foaming beer
  3. Idioms
      foam at the mouth
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    1. 1(especially of an animal) to have a mass of small bubbles in and around its mouth, especially because it is sick or angry
    2. 2(informal) (of a person) to be very angry
See the Oxford Advanced Learner's Dictionary entry: foam

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