the outer boundary of an artifact or a material layer constituting or resembling such a boundary | growth of hair or wool or fur covering the body of an animal |
a device that provides reactive force when in motion relative to the surrounding air; can lift or control a plane in flight | an outer garment that has sleeves and covers the body from shoulder down; worn outdoors |
a superficial aspect as opposed to the real nature of something | a thin layer covering 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 | |