Wildly amused by a Gorgon (6)
I believe the answer is:
medusa
'a gorgon' is the definition.
(Medusa is an example)
'wildly amused' is the wordplay.
'wildly' indicates an anagram.
'amused' with letters rearranged gives 'MEDUSA'.
'by' acts as a link.
(Other definitions for medusa that I've seen before include "all her visitors got stoned" , "Gorgon of Greek myth" , "Hideous female" , "Gorgon slain by Perseus" , "Mythical woman transformed into a Gorgon" .)