The Collaborative International Dictionary of English v.0.48:

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.
   [1913 Webster]