The member before? (3)
I believe the answer is:
leg
'the member' is the definition.
(member can mean a limb)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for leg that I've seen before include "Limb; stage" , "Support; cricket side" , "Stage (of race)" , "Gigot" , "Member" .)