Cutting remark (4)

I believe the answer is:
barb
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">cutting remark</span>' is the definition.<br/ ><span class="explanation-format__explanation">(as in a barbed comment)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for barb that I've seen before include "Stage whispers" , "added to wire?" , "Deliberately hurtful remark" , "Sharp projection" , "Cutting remark" .)