The story of Achilles' heel? (6)
I believe the answer is:
legend
'the story' is the definition.
(legend is a kind of story)
'achilles' heel?' is the wordplay.
'achilles'' becomes 'leg' (I can't explain this - if you can you should give a lot more credence to this answer).
'heel?' becomes 'end' (I've seen this in another clue).
'leg'+'end'='LEGEND'
'of' is the link.
Can you help me to learn more?
(Other definitions for legend that I've seen before include "Traditional story or myth" , "Story that may be untrue" , "Roger Federer, for example" , "Tale of heroism" , "Traditional story - inscription" .)