Grasslike plant
I believe the answer is:
sedge
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">grasslike plant</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for sedge that I've seen before include "Marsh grass" , "Waterside plant" , "Plant of wet ground" , "Grass-like plant growing in wet places" , "water-loving vegetation" .)