The varied uses of a classical hero (7)
I believe the answer is:
theseus
'a classical hero' is the definition.
(I've seen this before)
'the varied uses' is the wordplay.
'varied' indicates an anagram.
'uses' with letters rearranged gives 'seus'.
'the'+'seus'='THESEUS'
'of' is the link.
(Other definitions for theseus that I've seen before include "Ancient hero" , "Shakespeare's Duke of Athens" , "Mythological hero" , "Rescuer of Ariadne" , "Greek king" .)