Beat with a whip (4)
I believe the answer is:
lash
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">beat with a whip</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 lash that I've seen before include "Flexible strip of a whip" , "Secure with rope" , "Flog" , "Whip with a sharp blow" , "Whip; securely fasten" .)