scythe 
(sīth)
(sīth)n.
An implement consisting of a long, curved single-edged blade with a long handle, used for mowing or reaping.
tr.v. scythed, scyth·ing, scythes
To cut with or as if with a scythe.
[Middle English sithe, from Old English sīthe, sickle; see sek- in the Appendix of Indo-European roots.]
scythe