Meditative Buddhist sect (3)
I believe the answer is:
zen
'meditative buddhist sect' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for zen that I've seen before include "Form of Buddhism emphasising meditation and intuition" , "Form of Buddhism, emphasises meditation" , "Dibdin detective; Jap. Buddhism" , "branch of religion" , "Form of Buddhism that says meditation brings enlightenment" .)