Having four equal sides, the opposite sides parallel, and four right angles; square.
Produced by multiplying a number by itself; square.
A plane surface with four equal sides and four right angles; a square; hence, figuratively, anything having the outline of a square.
An aspect of the heavenly bodies in which they are distant from each other 90°, or the quarter of a circle; quartile.
The quadrate bone.
Having four sides.
An area defended by four fortresses supporting each other.
A polygon with four sides.