passe partout Meaning, Definition & Usage

Passe" par`tout" noun
Etymology
F., from passer to pass + partout everywhere.
Definitions
  1. That by which one can pass anywhere; a safe-conduct. Obs. Dryden.
  2. A master key; a latchkey.
  3. A light picture frame or mat of cardboard, wood, or the like, usually put between the picture and the glass, and sometimes serving for several pictures.

Webster 1913