The bubbles caused in fluids or liquors by fermentation or agitation; spume; foam; esp., a spume of saliva caused by disease or nervous excitement.

To cause to foam.

To throw up or out spume, foam, or bubbles; to foam; as beer froths; a horse froths.

A type of foam in which solid particles are also dispersed in the liquid (in addition to the gas bubbles).

A mixture of air, water and bitumen which rises to the surface of the primary separation vessel.

Milk which has been made thick and foamy by aerating it with hot steam.

A foamy bitumen, water and air mixture.