Having left a will (7)
I believe the answer is:
testate
'having left a will' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for testate that I've seen before include "Leaving a will" , "Having made a will before death" , "Having made a last will and testament" , "State of having made a will" , "Person willing" .)