FROTH, noun frauth. [Gr.]

1. Spume; foam; the bubbles causes in liquors by fermentation or agitation.

2. Any empty, senseless show of wit or eloquence.

3. Light, unsubstantial matter.

FROTH, verb transitive To cause to foam.

FROTH, verb intransitive To foam; to throw up spume; to throw out foam or bubbles. Beer froths in fermentation. The sea froths when violently agitated. A horse froths at the mouth when heated.