gilt-edged /ˈgɪltˌɛʤd/
  (a.)金邊的,最上等的
  Gilt-edge Gilt-edged a.
  1. Having a gilt edge; as, gilt-edged paper.
  2. Of the best quality; -- said of negotiable paper, etc. [Slang, U. S.]
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  gilt-edged
       adj 1: of the highest quality or value; "gilt-edged securities";
              "gilt-edged credentials"
       2: having gilded edges as the pages of a book