Drawback - society has courage (4)
I believe the answer is:
guts
'courage' is the definition.
(I know that guts is a type of fortitude)
'drawback society' is the wordplay.
'drawback' becomes 'gut'.
'society' becomes 's' (common abbreviation in names of organisations).
'gut'+'s'='GUTS'
'has' acts as a link.
(Other definitions for guts that I've seen before include "Pluck -- intestines" , "Intestinal courage?" , "stamina!" , "Belly; courage" , "Intestines; bravery" .)