foam ( foams plural & 3rd person present )
1 n-uncount Foam consists of a mass of small bubbles that are formed when air and a liquid are mixed together.
The water curved round the rocks in great bursts of foam.
2 n-mass Foam is used to refer to various kinds of manufactured products which have a soft, light texture like a thick liquid.
3 n-mass Foam or foam rubber is soft rubber full of small holes which is used, for example, to make mattresses and cushions.
...modern three-piece suites filled with foam rubber..., We had given him a large foam mattress to sleep on.
4 verb If a liquid foams, it is full of small bubbles and keeps moving slightly.
I let the water run into it and we watched as it foamed and bubbled. V
...ravines with foaming rivers rushing through them. V-ing
Translation English Cobuild Collins Dictionary
n bubbles, froth, head, lather, spray, spume, suds
vb boil, bubble, effervesce, fizz, froth, lather
English Collins Dictionary - English synonyms & Thesaurus
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"Collins Cobuild English Dictionary for Advanced Learners 4th edition published in 2003 © HarperCollins Publishers 1987, 1995, 2001, 2003 and Collins A-Z Thesaurus 1st edition first published in 1995 © HarperCollins Publishers 1995"