Te·cum·seh (tĭ-kŭm'sə) Shawnee leader who attempted to establish a confederacy to unify Native Americans against white encroachment. He sided with the British in the War of 1812 and was killed in the Battle of the Thames.
A Shawnee chief of the late eighteenth and early nineteenth centuries. He took arms against American settlers moving into the Middle West, and supported the British in the War of 1812, in which he was killed.