NOUN (2)

1. a city in northern India in Uttar Pradesh; during the Indian Mutiny its British residents were besieged by Indian insurgents;

2. the British residents of Lucknow were besieged by Indian insurgents during the Indian Mutiny (1857);

The Collaborative International Dictionary of English v.0.48:

Lucknow \Lucknow\ n.
   1. A city in India, the site of the Indian Mutiny (1857) when
      the British were beseiged.
      [WordNet 1.5]

WordNet (r) 3.0 (2006):

Lucknow
    n 1: a city in northern India in Uttar Pradesh; during the
         Indian Mutiny its British residents were besieged by Indian
         insurgents
    2: the British residents of Lucknow were besieged by Indian
       insurgents during the Indian Mutiny (1857)