A naturally level space or extended surface. Also = the ground (obsolete exc. dialect).

A flat surface. Now superseded by senses of plane, n.3 = plane, n.3 3a. Later: esp. a flat part of the surface of an object, as distinguished…

A flat side, face, or surface of an object having several sides. Obsolete.

A level space, = smeeth, n. Obsolete.

Geometry. A plane or two-dimensional figure; (also) a plane surface, a plane; (more generally) any surface. Obsolete.

A flat or level surface. Obsolete.

A geometrical plane, irrespective of position; an even surface.

A (more or less) horizontal superficies; a level or flat surface. Also figurative.

A flat or level surface of a material body. Also: the flatness of a material surface.

A smooth or flat surface or side.