CACHET Meaning of CACHET in English n. 1 a distinguishing mark or seal. 2 prestige. 3 Med. a flat capsule enclosing a dose of unpleasant-tasting medicine. [ F f. cacher press ult. f. L coactare constrain ] Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012