ETYM Old Eng. fam, fom, AS. fâm; akin to Old High Germ. and German feim.
1. A lightweight material in cellular form; made by introducing gas bubbles during manufacture.
2. A mass of small bubbles formed in or on a liquid; SYN. froth.
1. To make froth, become bubbly; SYN. froth, spume, suds.
2. Said of liquids: to boil; SYN. froth, fizz, effervesce, sparkle.