Preserve for burial (6)
I believe the answer is:
embalm
'preserve for burial' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for embalm that I've seen before include "Prepare for burial" , "Treat corpse so as to retard decay" , "Preserve corpse from decay" , "Prepare corpse for preservation (6)" , "Make into mummy" .)