"A Doll's House" playwright (5)
I believe the answer is:
ibsen
'a doll's house playwright' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for ibsen that I've seen before include "'Ghosts' writer" , "famous Norwegian" , "Norwegian dramatist of 'Hedda Gabler'" , "Norwegian dramatist and poet" , "Norwegian playwright (Peer Gynt)" .)