Definition of froth

• 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.
• n. - Any empty, senseless show of wit or eloquence; rhetoric without thought.
• n. - Light, unsubstantial matter.
• v. t. - To cause to foam.
• v. t. - To spit, vent, or eject, as froth.
• v. t. - To cover with froth; as, a horse froths his chain.
• v. i. - To throw up or out spume, foam, or bubbles; to foam; as beer froths; a horse froths.