Crop-cutting blade (6)
I believe the answer is:
scythe
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">crop-cutting blade</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 scythe that I've seen before include "Grain-cutting tool" , "Old grass cutter with long handle and curved blade" , "Old farming tool" , "Implement with curved blade" , "Cropping instrument" .)