Monk, brother (5)
I believe the answer is:
friar
This clue is a double definition.
'monk' is the first definition.
(I've seen this before)
'brother' is the second definition.
(I've seen this before)
(Other definitions for friar that I've seen before include "Mendicant preacher" , "Man connected with order" , "Eg, a Franciscan" , "Religious man" , "Father" .)