Rises for many members (6)
I believe the answer is:
climbs
'rises' is the definition.
(climb is a kind of rise)
'many members' is the wordplay.
'many' becomes 'c' (C is the Roman numeral for 100).
'members' becomes 'limbs' (limb is a kind of member).
'c'+'limbs'='CLIMBS'
'for' acts as a link.
(Other definitions for climbs that I've seen before include "Advances" , "Ascends, mounts" , "Ascends a hill or ladder" , "Moves upward gradually" , "Moves upwards" .)