landmark UK /ˈlændmɑːk/US /ˈlændmɑɹk/noun 4verb 1forms 3 noun4 •A recognizable natural or man-made feature used for navigation.Anyone have any weird landmarks they often remember seeing along roads in the olden days? — 2005 •A notable location with historical, cultural, or geographical significance. •[before a noun] (figurative) A major event or discovery.He called the overthrow of Iraqi dictator Saddam Hussein and the recent elections in Afghanistan landmark events in the history of liberty. — 2005 •(historical) An object that marks the boundary of a piece of land (usually a stone, or a tree). verb1 •(US) To officially designate a site or building as a landmark.St Mary's Church stands on the north side of the village, a building of flint and stone with a 140 ft high steeple that landmarks one of the most beautiful churches in Suffolk. — 1980 formslandmarked · landmarking · landmarks