falchion

 
Pronunciation: /ˈfɔːl(t)ʃ(ə)n/

noun

historical
  • a broad, slightly curved sword with the cutting edge on the convex side.

Origin:

Middle English fauchon, from Old French, based on Latin falx, falc- 'sickle'. The -l- was added in the 16th century to conform with the Latin spelling