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.
a square corner
Of numbers formed by multiplying two equal numbers.
9 is a square number.
Used in the names of units of area formed by multiplying a unit of length by itself.
square metre
Honest; straightforward.
square dealing
Fair.
I'm just looking for a square deal on my car repair.
Even; tied
The sides were square at the end of the half.
Socially conventional; boring.
In line with the batsman's popping crease.
Correctly aligned with respect to something else.
Hearty; vigorous.
It may be prison, but at least I'm getting three square meals a day.
Having a shape broad for the height, with angular rather than curving outlines.
a man of a square frame