1) This was originally a curved broad sword which had the edge on the convex side, although the word may have been used of any sword by the seventeenth century when it occurred frequently.
1586 Item a target and a fawchen, Sheffield
1667 two swords and a falchion, North Bierley
1680 my gilded fauchien, Lepton. The spelling could vary: 1666 one foatchon, two saddles and two bridles, Richmond.