Rabbit's tail (4)
I believe the answer is:
scut
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">rabbit's tail</span>' is the definition.<br/ ><span class="explanation-format__explanation">(scut can mean a rabbit's tail)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for scut that I've seen before include "Cuts into a small tail" , "Reindeer's tail" , "Small tail as of rabbit" , "Deer's tail" , "Short tail of hare" .)