Kolkata

from The American Heritage® Dictionary of the English Language, 5th Edition.

• A city of eastern India and the capital of West Bengal, on the Hooghly River in the Ganges delta. Founded c. 1690 as a British East India Company trading post, it was the capital of British India from 1772–1912. The chief port and major industrial center of eastern India, Calcutta is one of the country's largest cities.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• proper noun The State capital of West Bengal (India), formerly known as Calcutta.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun the largest city in India and one of the largest cities in the world; located in eastern India; suffers from poverty and overcrowding