Anglican bishop's hat (5)
I believe the answer is:
mitre
'anglican bishop's hat' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for mitre that I've seen before include "Bishop's headwear" , "Episcopal headdress" , "Bishop's cap - wood joint" , "in which one might find a bishop" , "Timer (anag.)" .)