One entry found for region.

Main Entry: re·gion
Pronunciation: r-jn
Function: noun
1 : an area, division, or district of administration
2 a : a part, portion, or area having no fixed boundaries <darker regions of the night sky> b : a broad geographic area <never visited the southwestern region of the U.S.>
3 : an indefinite area surrounding a specified body part <a pain in the region of the heart>
4 : a set of points any two of which can be connected by a line lying wholly within the set together with none, some, or all of the points on its boundary <a rectangular region>