/foʊm/
foam
BrE /fəʊm/
NAmE /foʊm/
(also ˌfoam ˈrubber) [U]
a soft light rubber material, full of small holes, that is used for seats, mattresses, etc.
a foam mattress
foam packaging
[U]
a mass of very small air bubbles on the surface of a liquid
SYN froth
a glass of beer with a good head of foam
The breaking waves left the beach covered with foam.
[U, C]
a chemical substance that forms or produces a soft mass of very small bubbles, used for washing, shaving, or putting out fires, for example
shaving foam
foam
BrE /fəʊm/
NAmE /foʊm/
[I] (of a liquid)
to have or produce a mass of small bubbles
SYN froth
foam at the ˈmouth
(especially of an animal)
to have a mass of small bubbles in and around its mouth, especially because it is sick or angry
(informal) (of a person)
to be very angry