foam

Short definition from Wiktionary

Noun

1. 1
   A substance composed of a large collection of bubbles or their solidified remains, especially
2. 2
   A substance composed of a large collection of bubbles or their solidified remains, especially: A collection of small bubbles created when the surface of a body of water is moved by tides, wind, etc.
3. 3
   A substance composed of a large collection of bubbles or their solidified remains, especially: A collection of small bubbles formed from bodily fluids such as saliva or sweat.
4. 4
   A substance composed of a large collection of bubbles or their solidified remains, especially: A collection of small bubbles on the surface of a liquid that is heated, fermented or carbonated.
5. 5
   A substance composed of a large collection of bubbles or their solidified remains, especially: A collection of small bubbles created by mixing soap with water.
6. 6
   A substance composed of a large collection of bubbles or their solidified remains, especially: A collection of small bubbles formed by mixing an extinguishing agent with water, used to cover and extinguish fires.
7. 7
   A material formed by trapping pockets of gas in a liquid or solid.
8. 8
   The sea.
9. 9
   Fury, rage, ire.
10. 10
    Sneakers.

Verb

1. 1
   To form or emit foam.
2. 2
   To spew saliva as foam; to foam at the mouth.
3. 3
   To coat or cover with foam.