n. [ From the Mongolian. ] 1. A person of the Mongolian race. [ 1913 Webster ]

2. Specifically: Any of the Mongolian peoples who conquered parts of India and established an empire lasting from 1526 to 1857. Also, any of their descendents. [ PJC ]

3. (Railroad) A heavy locomotive for freight traffic, having three pairs of connected driving wheels and a two-wheeled truck. [ 1913 Webster ]

4. A great personage; magnate; autocrat; as, an industrial mogul. [ Webster 1913 Suppl. ]

Great Mogul, or
Grand Mogul, the sovereign of the empire founded in Hindustan by the Mongols under Baber in the sixteenth century. Hence, a very important personage; a lord; -- sometimes only mogul or Moghul. Dryden. [ 1913 Webster ]

prop. a. [ See Mogul, n.. ] Of or pertaining to the Moguls{ 2 }; as, The Taj Mahal, the most beautiful piece of Mogul architecture, was built by the Mogul emperor Shah Jehan as a mausoleum for his favorite wife. [ PJC ]

prop. a. [ See Mogul, n.. ] The empire created in India by invading Mongolians (Tatars), established under Baber, who conquered Hindustan in 1526. The established religion of the empire was Islam. After the death of the Great Mogul Aurung-Zeb in 1707, power passed to the Mahrattas and the British. The empire existed only nominally in the early 1800's, and was finally abolished in 1857 by the deposing of the last emperor. [ PJC ]