A polygon with four sides of equal length and four right angles; an equilateral rectangle; a regular quadrilateral.
Something characterized by a square, or nearly square, form.
verb
To adjust so as to align with or place at a right angle to something else; in particular:
“The casting was mounted on a milling machine so that its sides could be squared.”
To resolve or reconcile; to suit or fit.
“John can square this question up for us.”
adjective
Shaped like a square (the polygon).
Forming a right angle, especially at right angles with the mast or the keel, and parallel to the horizon; said of the yards of a square-rigged vessel when they are so braced.