A little tribal sacrament in wood (5)
I believe the answer is:
balsa
'wood' is the definition.
(I know that balsa is a type of wood)
'a little tribal sacrament in' is the wordplay.
'a little' indicates a hidden word.
'BALSA' is hidden within 'tribal sacrament in'.
(Other definitions for balsa that I've seen before include "Strong, light wood" , "Lightweight timber" , "Central American forest tree used to make floats, rafts, models etc" , "Tree yielding light wood" , "Tropical American tree" .)