Not even a man, a society member (9)
I believe the answer is:
oddfellow
'a society member' is the definition.
(I've seen this before)
'not even a man' is the wordplay.
'not even' becomes 'odd' ('odd' is the opposite to 'even').
'a man' becomes 'fellow' (fellow is a kind of man).
'odd'+'fellow'='ODDFELLOW'
(Other definitions for oddfellow that I've seen before include "member of secret society" , "fraternal member" , "one of a fraternity" , "Member of fraternity" , "Member of friendly society (funny chap!)" .)