Herb of the onion family (5)
I believe the answer is:
chive
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">herb of the onion family</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 chive that I've seen before include "Leaves" , "Herb of onion family" , "Onion-like herb" , "12 down-like herb" .)