Hurtful remark (4)
I believe the answer is:
barb
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">hurtful remark</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 barb that I've seen before include "Backward-facing part of hook" , "A thorn or a gibe" , "Pointed part - gibe" , "Backward projecting point of an arrowhead" , "Arrowhead projection" .)