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(fm), n.[OE. fam, fom, AS. fm; akin to OHG. & G. feim.] The white substance, consisting of an aggregation of bubbles, which is formed on the surface of liquids, or in the mouth of an animal, by violent agitation or fermentation; froth; spume; scum; as, the foam of the sea. Foam cock, in steam boilers, a cock at the water level, to blow off impurities. Foam v. i.[imp. & p. p.Foamed (fmd); p. pr. & vb. n.Foaming.] [AS. f?man. See Foam, n.] 1. To gather foam; to froth; as, the billows foam. He foameth, and gnasheth with his teeth. Mark ix. 18. 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. Foam v. t.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. スポンサード リンク
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