Foam \Foam\ (f[=o]m), v. i. [imp. & p. p. {Foamed} (f[=o]md); p.
pr. & vb. n. {Foaming}.] [AS. f[=ae]man. See {Foam}, n.]
1. To gather foam; to froth; as, the billows foam.
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He foameth, and gnasheth with his teeth. --Mark ix.
18.
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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.
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