A four-square cipher.
A boxy style of domestic architecture with four rooms to a floor, one of which is usually a stair hall.
Solid, robust.
Pertaining to the International Church of the Foursquare Gospel.
Having four equal sides; square.
Pertaining to a four-square cipher.
A quadrilateral with two sides parallel.
The trapezium bone of the wrist.
A region on the ventral side of the brain, either just back of the pons Varolii, or, as in man, covered by the posterior extension of its transverse fibers.
A quadrilateral with two sides parallel and two sides non-parallel.