Definition of "landmark" in English

noun

1. (historical) An object that marks the boundary of a piece of land (usually a stone, or a tree).

2. A recognizable natural or man-made feature used for navigation.

3. A notable location with historical, cultural, or geographical significance.

4. (figurative, also attributive) A major event or discovery.

   • an important landmark in human history
   • a landmark paper in neurosurgery
   • a landmark ruling/case

verb

1. (US) To officially designate a site or building as a landmark.