noun, masculine/pwɛ̃.sɔ̃/plural: poinçons
stamp (device); a pointed tool, such as a punch, chisel, bodkin or awl; hallmark (an official marking)
Inherited from Old French poinçon, ponson, ponchon, probably a derivation from a Vulgar Latin verb *punctiāre from punctus or from Latin punctiōnem. Compare Italian punzone, Spanish punzón. Doublet of ponction.