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Definition of "landmark" []

  • A prominent identifying feature of a landscape. (noun)
  • A fixed marker, such as a concrete block, that indicates a boundary line. (noun)
  • An event marking an important stage of development or a turning point in history. (noun)
  • A building or site with historical significance, especially one marked for preservation by a municipal or national government. (noun)
  • Having great import or significance: a landmark court ruling. (adjective)

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.

Use "landmark" in a sentence
  • "BANGKOK—Thailand's Prime Minister Abhisit Vejjajiva said he plans to dissolve the House of Representatives by Friday and call what he described as a landmark election for the Southeast Asian country, which has been plagued by deep and sometimes deadly political divisions."
  • "Mr. Abhisit has said recently that he plans to dissolve the House of Representatives by Friday and call what he described as a landmark election for the Southeast Asian country, which has been plagued by deep and sometimes deadly political divisions."
  • "LOS ANGELES—After months of public battling, union and city leaders reached what they called a landmark deal Thursday that for the first time forced concessions from a coalition of city unions, and could shape other labor negotiations."