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