adjective.
Of or pertaining to a wall; being on, or in, a wall; growing on, or against, a wall.
adjective.
Resembling a wall; perpendicular or steep.
adjective.
a graduated circle, in the plane of the meridian, attached permanently to a perpendicular wall; -- used for measuring arcs of the meridian. See Circle, n., 3.
adjective.
a golden crown, or circle of gold indented so as to resemble a battlement, bestowed on him who first mounted the wall of a besieged place, and there lodged a standard.