landmark noun
1 feature of the landscape
ADJ. distinctive, prominent | famous, well-known | familiar After twenty years, all the familiar landmarks had disappeared. | local | historic
VERB + LANDMARK recognize
PREP. ~ for The tower was once a landmark for ships.
2 important stage in the development of sth
ADJ. great, important, major, significant
VERB + LANDMARK be, represent The Russian Revolution represents a landmark in world history.
LANDMARK + NOUN decision, ruling a landmark decision on the legal status of a foetus | case
PREP. ~ in The film is an important landmark in the history of the cinema.
You can also check other dicts: landmark (English, 中文解释 ), wordnet sense, Collins Definition