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English definition of “foam”

foam

verb [I]     /fəʊm/ US  /foʊm/
to produce small bubblesPhysical and chemical processes foam at the mouth If a person or an animal foams at the mouth, they have bubbles coming out of their mouth as a result of a disease.Veterinary medicineGeneral bodily disorders
(Definition of foam verb from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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