Like gran's rough play (4,4)
I believe the answer is:
king lear
'play' is the definition.
(Shakespeare play)
'like gran's rough' is the wordplay.
'rough' indicates an anagram (a rough or broken ordering of the letters).
'like'+'gran'='likegran'
'likegran' with letters rearranged gives 'KING LEAR'.
(Other definitions for king lear that I've seen before include "Shakespeare play with storm scene" , "Shakespeare's foolish, fond old man" , "Tragic Shakespeare monarch" , "Shakespeare's foolish tragic monarch" , "Part of ruler" .)