foam
🇺🇸
/fəʊm/
🇬🇧
/fəʊm/
A soft, light material with many small holes, used for seats and mattresses.
The foam mattress is very comfortable to sleep on.
Many small bubbles on the surface of a liquid.
The ocean waves create white foam on the beach.
A substance that makes many small bubbles, used for cleaning, shaving, or fighting fires.
The firefighter used foam to put out the fire quickly.
To make or have many small bubbles.
The soap began to foam when mixed with water.