a liturgical headdress worn by bishops on formal occasions | the outer boundary of an artifact or a material layer constituting or resembling such a boundary |
the surface of a beveled end of a piece where a miter joint is made | a device that provides reactive force when in motion relative to the surrounding air; can lift or control a plane in flight |
joint that forms a corner; usually both sides are bevelled at a 45-degree angle to form a 90-degree corner | a superficial aspect as opposed to the real nature of something |
| information that has become public |
| the extended two-dimensional outer boundary of a three-dimensional object |
| the outermost level of the land or sea |