FOAM

I. noun Etymology: Middle English fome, from Old English fām; akin to Old High German feim ~, Latin spuma ~, pumex pumice Date: before 12th century a light frothy mass of fine bubbles formed in or on the surface of a liquid or from a liquid: as, a frothy mass formed in salivating or sweating, a stabilized froth produced chemically or mechanically and used especially in fighting oil fires, a material in a lightweight cellular form resulting from introduction of gas bubbles during manufacture, sea , something resembling ~, ~less adjective II. verb Date: before 12th century intransitive verb 1. to produce or form ~, to froth at the mouth especially in anger, to gush out in ~, to become covered with or as if with ~ , transitive verb to cause to ~, to convert (as a plastic) into a ~, ~able adjective ~er noun