Great Plains Native (3)
(Other definitions for arapaho that I've seen before include "Indians" , "tribesman" , "North American native" , "tribe member" , "North American Indian" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">great plains native</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>