Netting used in game show (4)
I believe the answer is:
mesh
'netting' is the definition.
(I've seen this before)
'in game show' is the wordplay.
'in' says the answer is hidden in the clue.
'MESH' is hidden within 'game show'.
'used' acts as a link.
(Other definitions for mesh that I've seen before include "Get engaged" , "Work well together" , "Open fabric" , "Trap" , "fit together" .)