vt to cause to foam.
2. froth ·noun light, unsubstantial matter.
3. froth ·vt to spit, vent, or eject, as froth.
4. froth ·vt to cover with froth; as, a horse froths his chain.
5. froth ·noun any empty, senseless show of wit or eloquence; rhetoric without thought.
6. froth ·vi to throw up or out spume, foam, or bubbles; to foam; as beer froths; a horse froths.
7. froth ·noun the bubbles caused in fluids or liquors by fermentation or agitation; spume; foam; ·esp., a spume of saliva caused by disease or nervous excitement.