Thatcher definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
Thatcher, Margaret (Hilda) Baroness Thatcher of Kesteven (born Margaret Hilda Roberts) 1925-; Brit. politician: prime minister (1979-90)
Thatcher definition by American Heritage Dictionary
, Margaret Hilda. Baroness. Born 1925.
British Conservative politician who served as prime minister (1979-1990). Her administration was marked by anti-inflationary measures, a brief war in the Falkland Islands (1982), and the passage of a poll tax.