Square, v. t. [imp. & p. p.Squared (skwârd); p. pr. & vb. n.Squaring.] [Cf. OF. escarrer, esquarrer. See Square, n.] 1. To form with four equal sides and four right angles. Spenser.
2. To form with right angles and straight lines, or flat surfaces; as, to square masons' work.
3. To compare with, or reduce to, any given measure or standard. Shak.
4. To adjust; to regulate; to mold; to shape; to fit; as, to square our actions by the opinions of others.
Square my trial
To my proportioned strength. Milton.
5. To make even, so as to leave no remainder or difference; to balance; as, to square accounts.
6. (Math.) To multiply by itself; as, to square a number or a quantity.
7. (Astrol.) To hold a quartile position respecting.
The icy Goat and Crab that square the Scales. Creech.
8. (Naut.) To place at right angles with the keel; as, to square the yards.
To square one's shoulders, to raise the shoulders so as to give them a square appearance, — a movement expressing contempt or dislike. Sir W. Scott. — To square the circle(Math.), to determine the exact contents of a circle in square measure. The solution of this famous problem is now generally admitted to be impossible.