The brother of one’s parent (5)
I believe the answer is:
uncle
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">the brother of one's parent</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for uncle that I've seen before include "Male family member" , "Brother of one's parent" , "older relative" , "Pawnbroker's nickname" , ". . . . . Sam, the US government" .)