Caribbean religion (6)
I believe the answer is:
voodoo
'caribbean religion' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for voodoo that I've seen before include "Form of magic" , "Religious cult, involves witchcraft and animal deities" , "Haitian witchcraft" , "kind of witchcraft in west indies" , "Caribbean cult involving witchcraft" .)