A scythe is an agricultural tool with a curved single-edged blade on a long bent handle; it is used to cut long grass, grain, &c. It’s a period charge, used in the arms of Prers c.1295 [ANA2 548]. The scythe has its blade to chief by default.
The scythe blade alone is also found as a charge, as in the arms of Neynlinger, c.1450 [Ingeram 25]; indeed, the blade would appear to be a more common charge in period than the full scythe. For related charges, see pruning hook, sickle. See also pole-arm (war-scythe).
Alric of Couentreu bears: Sable, a scythe Or.
John Morgan of Caerleon bears: Per pale sable and purpure, in saltire two scythes argent.