Definition of cachet
1 a
:a seal used especially as a mark of official approval
b
:an indication of approval carrying great prestige
- The president placed his cachet on the project.
2 a
:a characteristic feature or quality conferring prestige
- regarded the possession of real estate as a cachet of respectability
b
:prestige
- being rich … doesn't have the cachet it used to
- —Truman Capote
3
:a medicinal preparation for swallowing consisting of a case usually of rice-flour paste enclosing a medicine
4 a
:a design or inscription on an envelope to commemorate a postal or philatelic event
b
:an advertisement forming part of a postage meter impression
c
:a motto or slogan included in a postal cancellation (see cancellation 3)
