Any quadrilateral having opposing sides parallel and four right angles.
Such a quadrilateral that is oblong (longer than it is wide): one that is not regular (equilateral), that is, any except a square.
A quadrilateral with two sides parallel and two sides non-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.