Piebald horse (5)
I believe the answer is:
pinto
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">piebald horse</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 pinto that I've seen before include "Spotted or piebald horse" , "A piebald pony" , "patchy horse" , "Piebald horse (US)" , "Mount" .)