1. A distinctive characteristic or attribute of someone or something
   "The artist's unique brushwork became his hallmark";
   - trademark, earmark, stylemark
    
2. A mark on an article of trade to indicate its origin and authenticity
   "The silver bowl bore the official hallmark";
   - authentication, assay-mark

1. Provide or stamp with a hallmark
   "The jeweller hallmarked the silver bracelet"

Derived forms: hallmarking, hallmarked, hallmarks

Type of: characteristic, mark, marker, marking

Encyclopedia: Hallmark, Patrick