foam
noun /fəʊm/
/fəʊm/
- (also foam rubber)[uncountable] a soft light rubber material, full of small holes, that is used for seats, mattresses, etc.
- a foam mattress
- foam packaging
- [uncountable] a mass of very small air bubbles on the surface of a liquid synonym froth
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- a glass of beer with a good head of foam
- The breaking waves left the beach covered with foam.
- [uncountable, countable] a chemical substance that forms or produces a soft mass of very small bubbles, used for washing, shaving (= cutting hair from the skin), or putting out fires, for example
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- a bottle of bath foam
- The fire extinguisher directs foam onto the fire.
Word OriginOld English fām (noun), fǣman (verb), of West Germanic origin; related to Old High German feim (noun), feimen (verb).