A ground is a unit of area used in India approximately equal to 203 square metres (2,185 ft²). After metrication in the mid-20th century, the unit is being phased out. However, it is still popular in Real Estate parlance.
"Ground". Sizes, grades, units, scales, calendars, chronologies. http://www.sizes.com/units/ground.htm. Retrieved 2007-01-20.