D defs.my
Entry 5 senses Webster, 1913

passe-partout

/(päs` pär`to͞o")/ · passe·-par·tout · IPA
01 n. That by which one can pass anywhere; a safe-conduct.
  1. 1.
    That by which one can pass anywhere; a safe-conduct.[Obs.]
  2. 2.
    A master key; a latchkey.
  3. 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.
  4. 4.
    A strip of adhesive paper or gummed tape used to mount a picture between a piece of glass and a backing.
  5. 5.
    The method of mounting a picture between a piece of glass and a backing, using a passe-partout{4}.