French; cacher to conceal: in 18th cent. treated as English.
2. fig. Stamp, distinguishing mark, ‘sign manual’.
3. attrib. Done under letter of cachet; privy, secret.
4. A covering of paste, gelatine, or other digestible material, enclosing (nauseous) medicine; = capsule n. 5.
Draft additions September 2006
Prestige, high status; the quality of being respected or admired. (OED)
"'We used their brand as a signifier of luxury and they got free advertising and credibility every time we mentioned it,' he writes. 'We were trading cachet.' (Actually, the book, not free of typos, says 'cache.')"