1. (n.) A plane figure having four angles, and consequently four sides; any figure having four angles.

2. (n.) A square or quadrangular space or enclosure, such a space or court surrounded by buildings, esp. such a court in a college or public school in England.

Little Joe arena biquadrate block cincture clos close confine container coop court courtyard croft curtilage delimited field enclave enclosure field fold forty four four-part diaphony foursome ground kraal list lot pale paling parcel of land park patch pen plat plot plot of ground quad quadrature quadrennium quadrilateral quadrille quadrinomial quadruplet quartet quatern quaternary quaternion quaternity quatrefoil real estate rectangle section square square dance squaring tetrad tetragon tetragram tetragrammaton tetrahedron tetralogy tetraphony tetrapody theater toft tract yard