Foam is many tiny bubbles that form a light, soft layer on liquids. We often see foam on beer, soap, or the ocean water.
There is foam on top of the drink.
The sea has white foam on waves.
Foam is a light, soft material with many small holes filled with air. It is used to make soft things like cushions, mattresses, or packing materials.
The shoe has a foam inner sole.
Foam is used in pillows and mattresses.
To foam means to make bubbles or froth on the surface of a liquid. This often happens with liquids like milk or water when they move or heat.
The milk foams when heated.
The sea foams after a big wave.
Foam here is a plastic material full of small air pockets. It is used to protect items in shipping or to stop heat leaving buildings.
They packed the glass in foam plastic.
Foam helps keep houses warm in winter.
Foam hair means hair styled or messy like soft bubbles. Sometimes it is used to describe hair that looks light and airy.
He has foam hair after the party.
Her hair looks like white foam.
To foam at the mouth means to be very angry or excited, often shown by bubbles of liquid near the mouth. It is often used in stories or expressions.
He foamed at the mouth with anger.
Dogs sometimes foam when they are angry.
Here, foam is a special chemical used in fires to cover burning liquids and stop flames. It blocks air from reaching the fire.
Firefighters used foam to stop the fire.
Foam covers flammable liquids to stop fire.
