British dramatist consuming half of game — duck, perhaps (9)
I believe the answer is:
orpington
'duck perhaps' is the definition.
(breed of duck)
'british dramatist consuming half of game' is the wordplay.
'british dramatist' becomes 'orton' (playwright Joe Orton).
'consuming' is an insertion indicator.
'half of' means to take half the letters.
'game' becomes 'ping-pong' (ping-pong is a kind of game).
'pingpong' with half the letters taken is 'ping'.
'orton' placed around 'ping' is 'ORPINGTON'.
(Other definitions for orpington that I've seen before include "London suburb" , "somewhere in London" , "character in Chicken Run?" , "domestic fowl" , "Breed of poultry" .)