Get a dry sort of play (7)
I believe the answer is:
tragedy
'play' is the definition.
(I have seen 'Serious play ' mean 'tragedy' so perhaps 'play' could also mean 'tragedy')
'get a dry sort' is the wordplay.
'sort' is an anagram indicator.
'get'+'a'+'dry'='getadry'
'getadry' with letters rearranged gives 'TRAGEDY'.
'of' is the link.
(Other definitions for tragedy that I've seen before include "Dire misfortune" , "Hamlet, say" , "Calamitous happening, great misfortune" , "story ending unhappily" , "King Lear, perhaps" .)