falchion
A somewhat curved, single-edged medieval sword of European origin, with the cutting edge on its convex side, whose design is reminiscent of the Persian scimitar and the Chinese dao.
I haue seene the day, with my good biting Faulchion
A billhook.
obsolete
Where it comes from
From Middle English fauchoun, from Old French fauchon (cognate with Italian falcione), from Vulgar Latin *falciōnem, from Latin falx.
Adapted from the Wiktionary entry falchion (CC BY-SA 4.0).