\Passe" par`tout"\, n. [F., from passer to pass +
partout everywhere.]
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.