Contributor (5)
'contributor' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for donor that I've seen before include "Supporter" , "Maker of gift" , "One giving to a cause" , "One who dishes out" , "patron" .)
'contributor' is the definition.
(thesaurus)
This is all the clue.
(Other definitions for donator that I've seen before include "One will give" , "Presenter" , "Someone giving" , "Giver" , "benefactor!" .)