North American bison (7)
I believe the answer is:
buffalo
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">north american bison</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 buffalo that I've seen before include "Colloquialism for the N American bison" , "Great Lakes port" , "Large bovine animal" , "Large animal of the cattle family" , "Ox with swept-back horns" .)