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Noun: foam  fowm
  1. A mass of small bubbles formed in or on a liquid
    "the beer had a thick head of foam";
    - froth
  2. A lightweight material in cellular form; made by introducing gas bubbles during manufacture
Verb: foam  fowm
  1. Become bubbly, frothy or foaming
    "The river was foaming";
    - froth, fizz, effervesce, sparkle, form bubbles

Derived forms: foamed, foams, foaming

Type of: bubble, material, stuff

Encyclopedia: Foam