- something that passes everywhere or provides a universal means of passage.
- a master key; skeleton key.
- an ornamental mat for a picture.
- a method of framing in which a piece of glass is placed over a picture and is affixed to a backing by means of adhesive strips of paper or other material pasted over the edges.
- paper prepared for this purpose.
- a mounting for a picture in which strips of strong gummed paper are used to bind together the glass, picture, and backing
- the gummed paper used for this
- a mat, often decorated, on which a picture is mounted
- something that secures entry everywhere, esp a master key
