What is "kasur"

Kasur or Qasur , ( Punjabi: ), is the headquarters of Kasur District, Pakistan. It is the 20th most populous city of Pakistan. Bordered to the north by Lahore, by India to the south and east, the city is adjacent to the border of Ganda Singh Wala, a border with its own flag-lowering ceremony similar to that of Wagah but far more intimate and less jingoistic. Kasur is also the burial place of the legendary Sufi-poet Bulleh Shah.