Tiruchirapalli (also spelled Tiruchchirappalli, commonly known as Tiruchi or Trichy, formerly known as Trichinopoly under British rule) is a city situated on the banks of the Kaveri river, centrally located in the Indian state of Tamil Nadu.
The name of this town, Tiruchirapalli, originates as a tribute (Thiru in Tamil means respected) to a Jain monk by the name chira; so Tiruchirapalli means "the town of the great Jain monk".
It has many historic churches, mosques, temples and monuments. It was an important town in the days of the later Cholas as well as during the early days of British East India Company. One famous landmark in Tiruchirapalli is the Rock Fort - a huge hillock of rock. There is a Ganesha temple on top; this was also used as a military encampment for some time. For this the city is also called the "Rock City."
Trichinopoly is important as a trading centre, especially as being a railway junction.
Trichinopoly and its neighbourhood was the scene of much hard fighting between the Exglish and the French during the Carnatic wars between 1749 and 1761.
The surface is generally flat, though diversified by masses of crystalline rock, of which the Trichinopoly Rock in the fort is a well-known example.