Radio play by Dylan Thomas (5,4,4)
I believe the answer is:
under milk wood
'radio play by dylan thomas' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for under milk wood that I've seen before include "Work by Dylan Thomas" , "Radio play by Dylan Thomas" , "Fail fully to exploit deal" , "Welsh play" , "Radio poem by Dylan Thomas" .)