Sad mourners hit the gin (7,4)
I believe the answer is:
mothers ruin
'the gin' is the definition.
(I've seen this before)
'sad mourners hit' is the wordplay.
'sad' indicates an anagram.
'mourners'+'hit'='mournershit'
'mournershit' with letters rearranged gives 'MOTHERS RUIN'.
(Other definitions for mothers ruin that I've seen before include "Gin (in popular parlance)" , "Gordon's" .)