Riding whip (4)
I believe the answer is:
crop
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">riding whip</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 crop that I've seen before include "The yield, from cereals say" , "Season's produce" , "where bird food is temporarily stored?" , "Dock" , "Cut short the harvest" .)