Heard end of story (4)
I believe the answer is:
tale
'story' is the definition.
(synonyms)
'heard end' is the wordplay.
'heard' indicates a 'sounds like' (homophone) clue.
'end' becomes 'tail' (tail is a kind of end).
'tail' sounds like 'TALE'.
'of' is the link.
(Other definitions for tale that I've seen before include "See 12" , "Late with a story" , "relation" , "Anecdotal narrative" , "Shakespeare play: 'The Winter's . . . .'" .)