[1] : The Collaborative International Dictionary of English v.0.48

foaming \foam"ing\ adj.
   giving off bubbles and developing a head of foam; as, a
   foaming glass of beer.

   syn: bubbling, frothing.
        wordnet 1.5

[2] : The Collaborative International Dictionary of English v.0.48

foam \foam\ f=om, v. i. imp.  p. p. foamed f=omd; p.
   pr.  vb. n. foaming. as. f=aeman. see foam, n.
   1. to gather foam; to froth; as, the billows foam.
      1913 webster

            he foameth, and gnasheth with his teeth. --mark ix.
                                                  18.
      1913 webster

   2. to form foam, or become filled with foam; -- said of a
      steam boiler when the water is unduly agitated and frothy,
      as because of chemical action.
      1913 webster
see also:
foamed foaming foam 

[3] : WordNet (r) 2.0

foaming
     adj 1: emitting or filled with bubbles as from carbonation or
            fermentation; "bubbling champagne"; "foamy or frothy
            beer" syn: bubbling, bubbly, foamy, frothy, effervescing
     2: producing or covered with lathery sweat or saliva from
        exhaustion or disease; "the rabid animal's frothing mouth"
        syn: foamy, frothing
     3: covered with or resembling small bubbles as from being
        agitated by beating or heating; "the bubbling candy
        mixture"; "a cup of foaming cocoa"; "frothy milkshakes";
        "frothy waves"; "spumy surf" syn: bubbling, foamy, frothing,
         spumous, spumy, sudsy
see also:
bubbling bubbly foamy frothy effervescing frothing 
spumous spumy sudsy 

Foaming >> F Words
Foaming, definition of term: Foaming
foaming_pag1.html