Member on stage (3)
I believe the answer is:
leg
I believe this is a triple definition!
'member' is the first definition.
(member can mean a limb)
'on' is the second definition.
(cricket term, fielding positions)
'stage' is the third definition.
(I know that stage can be written as leg)
(Other definitions for leg that I've seen before include "Support; cricket side" , "Limb; stage" , "Poultry portion" , "Gigot" , "Projecting support for chair or table" .)