Game played in a court (6)
I believe the answer is:
squash
'game played in a court' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for squash that I've seen before include "Fruit drink; a ball game" , "Cordial drink" , "Vegetable on court?" , "Ballgame for two" , "Suppress - fruit drink" .)