Purloined a vestment (5)
I believe the answer is:
stole
I believe this is a double definition.
'purloined' is the first definition.
(I've seen this before)
'a vestment' is the second definition.
(I know that stole is a type of vestment)
(Other definitions for stole that I've seen before include "Item of clothing" , "Long shawl" , "Garment worn over the shoulders" , "Moved silently" , "Purloined; wrap" .)