cachet

1. (archaic) A seal, as of a letter.archaiccountableuncountable

2. (figurative) A special characteristic or quality; prestige, especially via association.Examples: "I remember when this diner was a quiet hangout, but lately it seems to be losing its cachet."; "In fact, within the Waffen-SS as a whole, the carrying of a personal weapon such as a pistol or a submachine-gun in addition to or instead of the issue rifle became something of a cachet."; "He told Bai, "When you go out and talk to them, people are much more interested in something like MoveOn.org than in the Democratic Party. It has cachet. There is no cachet in the Democratic Party.[…]""Synonyms: charm, je ne sais quoi, magic touch, oomph, zingcountablefigurativelyuncountable

3. (philately) A commemorative stamped design or inscription on an envelope, other than a cancellation or pre-printed postage.Examples: "The Alcatraz pelican cachet turned out to have a unique history of its own which had been lost over the years. Master cachet designer and artist John Coulthard (1903-1966) of 17 Elm Street Modesto, California, was the creator of the stamp."countableuncountable

4. (medicine) A capsule containing a pharmaceutical preparation.Examples: "In order to facilitate taking by the patient, powders are often ordered to be dispensed in cachets."; "One cachet on an empty stomach first thing in the morning, a second in one and a half hours, a third in one hour afterwards, and a fourth two hours later."countableuncountable