noun, masculine/aʁ.sɔ̃/plural: arçons
tree (wooden frame used in the construction of a saddle)
Related: cheval d'arçons, vider les arçons, désarçonner
Inherited from Old French, from Vulgar Latin *arciōnem (“saddlebow”), from Classical Latin arcus (“bow”). Compare Italian arcione, Portuguese arção, Spanish arzón.