Largest antelope (5)
I believe the answer is:
eland
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">largest antelope</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for eland that I've seen before include "Led an (anag) -- antelope" , "African beast" , "Large African deer with short spiral horns" , "Browser" , "African mammal" .)