Stirs (up) (4)
'stirs up' is the definition.
('incite' can be a synonym of 'stir up')
This is all the clue.
(Other definitions for incites that I've seen before include "Encourages" , "Provokes or stirs up" , "Provokes to action" , "Eggs on" .)
(Other definitions for gins that I've seen before include "Sings badly for drinks" , "Alcoholic drinks" , "Drinks; traps" .)