Definition of potin in US English:

potin

noun

  • Archaeology. An alloy of copper and tin, usually with lead and zinc (sometimes perhaps with silver), formerly used in the manufacture of coins (typically cast rather than struck), notably by ancient Celtic peoples of Gaul and southern Britain (frequently attributive). Now also: a coin made of this alloy.

Origin

Early 17th century (in an earlier sense). From Middle French, French potin (also † potain, † pottein) a copper-based metal alloy originally used as pot metal, often from recycled utensils, (in archaeology) a similar alloy used for ancient coins from pot + -in, of uncertain identity.