The American reindeer (7)
I believe the answer is:
caribou
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">the american reindeer</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 caribou that I've seen before include "Reindeer of North America" , "Creature" , "North American Arctic deer" , "Wild animal" , "Arctic deer with large antlers" .)