To eject from a position or place; force out: "the American Revolution, which ousted the English” ( Virginia S. Eifert).
To take the place of, especially by force; supplant. See Synonyms at eject.
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.