A tool used for cutting crops (6)

I believe the answer is:

scythe

(Other definitions for scythe that I've seen before include "what the reaper holds" , "Old hand-held cutter of hay" , "Bladed mowing tool" , "Grass-cutting tool" , "Old-fashioned hand-held hay mower" .)

I've seen this clue in the Sydney Morning Herald.

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