the world > space > shape > angularity > specific angular shape > [noun] > quadrilateral > square > side of a square (4)
A side of a square, rectangle, or polygon; a face of a cube. Obsolete.
Each of the four sides of a square or square-shaped object. Obsolete. rare.
Each of the four sides of a square or square-shaped building. Cf. quadrature, n. 2. Obsolete. rare.