1 an object on land that serves as a guide to seamen or others: The church tower is a landmark for sailors because it stands on the top of a cliff.
az: oriyentir, nişangah
ru: наземный ориентир
2 an event of great importance: The discovery of noble gases was an important landmark in the history of chemistry.
az: dönüş nöqtəsi, əlamətdar hadisə
ru: веха