noun (n)

• a distinctive characteristic or attribute

  sebuah khas karakteristik atau atribut

  Synonym:
  earmark, stylemark, trademark
  

  source: wordnet30
• a mark on an article of trade to indicate its origin and authenticity

  tanda pada artikel perdagangan yang menandakan asal usulnya dan keaslian

  Synonym:
  assay-mark, authentication
  

  source: wordnet30
• The official stamp of the Goldsmiths' Company and other assay offices, in the United Kingdom, on gold and silver articles, attesting their purity. Also used figuratively; -- as, a word or phrase lacks the hall-mark of the best writers.

  NA

  source: webster1913