1. 
[syn: bubbling, bubbly, foaming, foamy, frothy, effervescing, spumy]
The Collaborative International Dictionary of English v.0.48:
Spumous \Spum"ous\ (sp[=u]m"[u^]s), Spumy \Spum"y\
   (sp[=u]m"[y^]), a. [L. spumosus, fr. spuma foam: cf. F.
   spumeux.]
   Consisting of, containing, or covered with, froth, scum, or
   foam; frothy; foamy.
   [1913 Webster]
         The spumous and florid state of the blood. --Arbuthnot.
   [1913 Webster]
         The spumy waves proclaim the watery war. --Dryden.
   [1913 Webster]
WordNet (r) 3.0 (2006):
spumy
    adj 1: emitting or filled with bubbles as from carbonation or
           fermentation; "bubbling champagne"; "foamy (or frothy)
           beer" [syn: bubbling, bubbly, foaming, foamy,
           frothy, effervescing, spumy]