Definition of "cachet" in English

noun

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

2. (figurative) A special characteristic or quality; prestige, especially via association.

   • I remember when this diner was a quiet hangout, but lately it seems to be losing its cachet.

3. (philately) A commemorative stamped design or inscription on an envelope, other than a cancellation or pre-printed postage.

4. A sealed envelope containing an item whose price is being negotiated.

5. (medicine) A capsule containing a pharmaceutical preparation.

6. A hidden location from which one can observe birds while remaining unseen.

verb

1. (transitive, philately) To mark (an envelope) with a commemorative stamped design or inscription.