Time Clare trained to be nun (9)
I believe the answer is:
carmelite
'be nun' is the definition.
(I've seen this before)
'time clare trained' is the wordplay.
'trained' indicates an anagram (to train can mean to grow something into a shape).
'time'+'clare'='timeclare'
'timeclare' with letters rearranged gives 'CARMELITE'.
'to' is the link.
(Other definitions for carmelite that I've seen before include "Friar or nun of particular order" , "member of religious order" , "Sister" , "Prayer" , "Does Mal recite about the monk?" .)