Endowment (5)
'endowment' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for grant that I've seen before include "Give or allow as a privilege" , "cash received" , "nominally associated with Ulysses?" , "Give (a right); gift" , "Make" .)
(Other definitions for legacy that I've seen before include "Inheritance" , "Gift of property by will" , "What's left" , "Birthright" , "estate?" .)