HALLMARK
- to mark with an official stamp [v HALLMARKED, HALLMARKING, HALLMARKS]
- A mark stamped on articles of gold, silver, or platinum in Britain, certifying their standard of purity
- A distinctive feature, esp. one of excellence
- to mark with a official stamp [v -ED, -ING, -S]
- also refers to a mark or design placed or stamped on something to indicate its origin, purity, or genuineness, as in sterling silver hallmarks.