Horse controls (5)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">horse controls</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>
(Other definitions for reins that I've seen before include "Horse's controls" , "Means of control for a horse" , "Harnesses" , "Rider's straps" , "They're used to control" .)