1. (n.) The bubbles caused in fluids or liquors by fermentation or agitation; spume; foam; esp., a spume of saliva caused by disease or nervous excitement.
2. (n.) Any empty, senseless show of wit or eloquence; rhetoric without thought.
3. (n.) Light, unsubstantial matter.
4. (v. t.) To cause to foam.
5. (v. t.) To spit, vent, or eject, as froth.
6. (v. t.) To cover with froth; as, a horse froths his chain.
7. (v. i.) To throw up or out spume, foam, or bubbles; to foam; as beer froths; a horse froths.