Weed; cut short (4)
I believe the answer is:
dock
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">weed</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(type of weed)</span><br/ ><br/ >'<span class="explanation-format__original">cut short</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(as in docking a dog's tail)</span><br/ ><br/ ></span>
(Other definitions for dock that I've seen before include "Where one might repair cutter" , "Harbour" , "Use this for nettle stings" , "Antidote to nettle stings" , "weed bit of station > where Richard Roe stood" .)