foam

 
Pronunciation: /fəʊm/

noun

[mass noun]
  • a mass of small bubbles formed on or in liquid, typically by agitation or fermentation: a beer with a thick head of foam
  • a mass of small bubbles formed from saliva or sweat.
  • a liquid preparation containing many small bubbles: shaving foam
  • a lightweight form of rubber or plastic made by solidifying liquid foam: [as modifier]: foam rubber
  • (the foam) literary the sea: Venus rising from the foam

verb

[no object]
  • form or produce a mass of small bubbles; froth: the sea foamed beneath them (as adjective foaming) pints of foaming bitter

Phrases

foam at the mouth

informal be very angry.

Derivatives

foamless

adjective

Origin:

Old English fām (noun), fǣman (verb), of West Germanic origin; related to Old High German feim (noun), feimen (verb)