Osman I

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

• Founder of the Ottoman dynasty that ruled Turkey after the 13th century. He controlled most of northwest Asia Minor.

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

• noun the conqueror of Turkey who founded the Ottoman Empire and the Ottoman dynasty that ruled Turkey after the 13th century; conquered most of Asia Minor and assumed the title of emir in 1299 (1259-1326)