FOAM
—none. 1 mass of small bubbles formed on or in liquid by agitation, fermentation, etc. 2 froth of saliva or sweat. 3 substance resembling these, e.g. Spongy rubber or plastic. —verb. Emit or run with foam; froth. ? foam at the mouth be very angry. ? foamy adjective. (-ier, -iest). [old english]