Drama writer's safe space (7)
I believe the answer is:
playpen
'safe space' is the definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.
'drama writer's' is the wordplay.
'drama' becomes 'play' (synonyms).
'writer' becomes 'pen' (something which writes).
'play'+'pen'='PLAYPEN'
Can you help me to learn more?
(Other definitions for playpen that I've seen before include "device to capture the young" , "Nipper stuck here" , "Limited room for amusement" , "Portable enclosure for young-child" , "Portable enclosure for tots" .)