Where does “arpent” come from?

arpent (English) comes from French arpent, from Late Latin arepennis, from Gaulish are-penno- — end, extremity of a field.

arpent (English): A pre-metric French unit of length, having...

Definitions

Step	Language	Word	Meaning
1	French	arpent	arpent
2	Late Latin	arepennis	surface of a field
3	Gaulish	are-penno-	end, extremity of a field

arpent — Etymology, Origin & Word History | Etymology Explorer