What does "foam" mean?

Foam: To gather foam; to froth; as, the billows foam. He foameth, and gnasheth with his teeth. Mark ix.

Additional senses

  1. 2.2. To form foam, or become filled with foam; -- said of a steam boiler when the water is unduly agitated and frothy, as because of chemical action.
  2. 3.To cause to foam; as,to foam the goblet; also (with out), to throw out with rage or violence, as foam. "Foaming out their own shame." Jude 13.

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