having four equal sides, the opposite sides parallel, and four right angles; square.-produced by multiplying a number by itself; square.-square; even; balanced; equal; exact.-squared; suited; correspondent.-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. see the note under aspect, 6.-the quadrate bone.-to square; to agree; to suit; to correspond; -- followed by with.-to adjust (a gun) on its carriage; also, to train (a gun) for horizontal firing.