a historical region on northwestern India and northern Pakistan
A geographical region of South Asia, divided (by the Radcliffe Line) between India and Pakistan. Pakistani Punjab includes the (West) Punjab Province and parts of the Islamabad Capital Territory; Indian Punjab includes (East) Punjab State and some other territories.
The word comes from Classical Persian, meaning "[Land of] the Five Rivers." It originally referred to the region defined by five specific rivers: the Jhelum, Chenab, Ravi, Sutlej, and Beas.