· a mass of small bubbles formed in or on a liquid; "the beer had a thick head of foam"
Synonym(s): froth
Hypernym(s): bubble
· a lightweight material in cellular form; made by introducing gas bubbles during manufacture
· become bubbly or frothy or foaming; "The boiling soup was frothing"; "The river was foaming"; "sparkling water"
Synonym(s): froth, fizz, effervesce, sparkle, form_bubbles
Hypernym(s): bubble