Source : Webster's Revised Unabridged Dictionary (1913)

Sizzle \Siz"zle\, v. i. [imp. & p. p. {Sizzled}; p. pr. & vb. n.
   {Sizzling}.] [See {Siss}.]
   To make a hissing sound; to fry, or to dry and shrivel up,
   with a hissing sound. [Prov. Eng. & Colloq. U. S.] --Forby.

Sizzle \Siz"zle\, n.
   A hissing sound, as of something frying over a fire. [Prov.
   Eng. & Colloq. U. S.]

Source : WordNet®

sizzle
     v 1: make a sound like frying fat
     2: seethe with deep anger or resentment; "She was sizzling with
        anger"
     3: burn or sear with a sizzling sound; "The fat sizzled in the
        pan"