Three-lobed leaf (7)
I believe the answer is:
trefoil
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">three-lobed leaf</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 trefoil that I've seen before include "Small plant with yellow flowers and three leaves - to rifle (anag)" , "bacon-and-eggs?" , "Plant with clover-like leaves" , "clover, possibly" , "Leaf divided into three sections" .)