prestige, or a characteristic feature or quality that confers prestige

The smells of cellars are a rare treat to dogs, especially ancient Brooklyn cellars which have a cachet all their own — Christopher Morley

a seal on a document, esp one used as a mark of official approval

something other than the postmark that is stamped by hand on a postal item

a capsule of rice paper or flour paste containing an unpleasant-tasting medicine