foam
1. foam \'fo-m\ n [ME fome, fr. OE fa-m; akin to OHG feim foam, L spumaX
foam, pumex pumice 1: a light frothy mass of fine bubbles formed in or on
the surface of a liq uid : as 1a: such a mass formed in salivating or
sweating 1b: a stabilized froth produced chemically or mechanically and
used esp. in fighting oil fires 1c: a material in a lightweight cellular
form resulting from introduction o f gas bubbles during manufacture 2: SEA
3: something resembling foam
2. foam vi 1a: to produce or form foam 1b: to froth at the mouth esp. in
anger; broadly : to be angry 2: to gush out in foam 1: to cause to foam;
specif : to cause air bubbles to form in 2: to convert (as a plastic) into
a foam