passepartout
/ˌpæspɑːˈtuː/noun
1
- （亦作passepartout frame）a picture or photograph simply mounted between a piece of glass and a sheet of card (or two pieces of glass) stuck together at the edges with adhesive tape用镶画法制成的画（或照片）。
1.1
- mass noun adhesive tape or paper used in making such a frame镶画用的胶带（或纸）。
2
- archaic a master key〈古〉万能钥匙。
词源
late 17th cent.: from French, literally 'passes everywhere'.