From Longman Dictionary of Contemporary Englishldoce_114_bfoamfoam1 /fəʊm $ foʊm/ ●○○ noun [uncountable] 1 DAIR (also foam rubber) a type of soft rubber with a lot of air in it, used in furniture a foam mattress2 a mass of very small bubbles on the surface of a liquid SYN froth The sea was covered in foam.3 DCBa substance which is like a very thick soft liquid with a lot of bubbles in it Firefighters using water and foam are still tackling the blaze. shaving foam —foamy adjective
Examples from the Corpus
foam• foam packing material• The grypesh swam out after them, and there were battles fought there in a welter of blood and foam.• The fire extinguisher uses a chemical foam rather than water.• Uses Clinique cosmetics and Ortho contraceptive foam.• a dirty foam mattress• And I'd kiss her sniggers away; shaving foam on her face, in her hair.• There are still thousands of pieces of furniture in the second hand market containing the old-style foam.• White foam from the top of the waves left lines on the beach.foamfoam2 verb [intransitive] 1 TDto produce foam The green water splashed and foamed over the rocks.2 → be foaming at the mouth→ See Verb tableExamples from the Corpus
foam• Beat the cream until it foams.• It was past splashing and foaming.• Below, the water foamed and whispered.• A big, foaming glass of... sulfur.• The combustion melts the pumice, the hot gases foam it up, and the hot foam fills the mould in seconds.• The violent foaming seas mesmerized them all.Origin foam1 Old English fam 