Large land mammal (8)
I believe the answer is:
elephant
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">large land mammal</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 elephant that I've seen before include "Jumbo" , "Tusked mammal" , "Pachyderm hunted for ivory" , "Trunked mammal" , "Large animal found in the plane?" .)