Definition of sizzles:
(v) :
(intransitive) To be exciting or dazzling.
(n) :
(uncountable) Zing, zip, or pizazz; excitement.
(v) :
(intransitive) To make the sound of water boiling on a hot surface.
(v) :
(transitive, informal) To cook (something) in a manner which causes that sound.
(n) :
(countable) The sound of water boiling on a hot surface.
(n) :
(countable, informal) The process of being cooked which involves that sound.