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English definition of “foam”

foam

noun [U] uk   /fəʊm/ us    /foʊm/

foam noun [U] (BUBBLES)

a mass of very small bubbles formed on the surface of a liquid a substance like cream that is filled with bubbles of air: shaving foam

foam noun [U] (SOFT MATERIAL)

a soft material used to fill furniture and other objects

foam

verb [I] uk   /fəʊm/ us    /foʊm/
to produce small bubbles 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.
(Definition of foam from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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