The Collaborative International Dictionary of English v.0.48:

fizz \fizz\ (f[i^]z), v. i. [imp. & p. p. fizzed (f[i^]zd); p.
   pr. & vb. n. fizzing.] [Cf. Icel. f[imac]sa to break wind,
   Dan. fise to foist, fizzle, OSw. fisa, G. fisten, feisten.
   Cf. Foist.]
   To make a hissing sound, such as that of a burning fuse or a
   bubbling carbonated beverage.
   [1913 Webster +PJC]

The Collaborative International Dictionary of English v.0.48:

Fizz \Fizz\, n.
   A hissing sound; as, the fizz of a fly.
   [1913 Webster] fizzing

WordNet (r) 3.0 (2006):

fizz
    n 1: an effervescent beverage (usually alcoholic)
    v 1: become bubbly or frothy or foaming; "The boiling soup was
         frothing"; "The river was foaming"; "Sparkling water" [syn:
         foam, froth, fizz, effervesce, sparkle, form
         bubbles]

Moby Thesaurus II by Grady Ward, 1.0:

90 Moby Thesaurus words for "fizz":
   assibilate, assibilation, blubber, boil, boil over, boiling,
   bubble, bubble over, bubble up, bubbliness, bubbling, burble, buzz,
   carbonation, champagne, ebullience, ebulliency, ebullition,
   effervesce, effervescence, effervescency, effervescing, ferment,
   fermentation, fizzle, fizzling, foaming, frication,
   frictional rustling, froth, frothiness, frothing, guggle, gurgle,
   hiss, hissing, hush, hushing, lisp, plain, plop, rhonchus, seethe,
   seltzer, shush, shushing, sibilance, sibilate, sibilation, siffle,
   sigmatism, simmer, siss, sissing, sizz, sizzle, sizzling, sneeze,
   sneezing, sniff, sniffle, snore, snort, snuff, snuffle, soda,
   soda water, soft drink, sparkle, spit, splutter, spumescence,
   sputter, squash, squelch, squish, sternutation, stertor, swish,
   tonic, wheeze, whish, whisper, whistle, whistling, white noise,
   whiz, whoosh, work, zip