fəum n. & v. --n. 1 a mass of
small bubbles formed on or in
liquid by
agitation,
fermentation, etc. 2 a
froth of
saliva or
sweat. 3 a
substance resembling
these, e.g. rubber or
plastic in a
cellular mass. --v.intr. 1
emit foam; froth. 2
run with foam. 3 (of a vessel) be filled
and overflow with foam. øfoam at
the mouth be
very angry. øøfoamless adj. foamy adj. (foamier, foamiest ). [OE fam f. WG]