Donor (5)
I believe the answer is:
giver
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">donor</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that donor can be written as giver)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for giver that I've seen before include "Present source" , "Donor" , "Bestower" , "presenter" .)