form or send out foam; froth
mass of small, usually white, air bubbles formed in or on a liquid
"the beer had a thick head of foam"
"The boiling soup was frothing"
"The river was foaming"
The sighing of the waves as they thickened into roundels of foam.
出自： L. Durrell
The white foam burst from the bottle's neck.
出自： I. McEwan
Fall down in convulsions [and] foam at the mouth.
出自： W. Irving
Still urging on his foaming horse.
出自： E. A. Freeman