Brahmin, possibly, contributing to growth industry (5)
I believe the answer is:
hindu
'brahmin possibly' is the definition.
(brahmin is a kind of Hindu)
'contributing to growth industry' is the wordplay.
'contributing to' indicates a hidden word.
'HINDU' can be found hidden inside 'growth industry'.
(Other definitions for hindu that I've seen before include "Person with faith" , "Believer in an Indian religion" , "Most of the Indians are" , "Devotee of Indian religion" , "Indian religious adherent" .)