How did delhi get its name?
There are a number of legends associated with the origin of the name Delhi. One is that it is derived from Dhillu or Dilu, a king of Mauryan dynasty who built a city at this location in 50 BC and named it after himself. Another legend holds that the name of the city is based on the Hindi/Prakrit word dhili (loose) and that it was used by the Tomaras to refer to the city because the Iron Pillar of Delhi had a weak foundation and had to be moved. The coins in circulation in the region under the Tomaras were called dehliwal. According to the Bhavishya Purana, King Prithviraj Chauhan, of Indraprastha built a new fort in the modern-day Purana Qila area for the convenience of all four castes in his kingdom. He ordered the construction of a gateway to the fort and later named the fort dehali. Some historians believe that the name is derived from Dilli, a corruption of dehleez or dehali-both terms meaning 'threshold' or 'gateway'- and symbolic of the city as a gateway to the Gangetic Plain. Another theory suggests that the city's original name was Dhillika.