"landmarks" in the noun sense
1. landmark
the position of a prominent or well-known object in a particular landscape
"the church steeple provided a convenient landmark"
2. landmark, turning point, watershed
an event marking a unique or important historical change of course or one on which important developments depend
"the agreement was a watershed in the history of both nations"
3. landmark
a mark showing the boundary of a piece of land
4. landmark
an anatomical structure used as a point of origin in locating other anatomical structures (as in surgery) or as point from which measurements can be taken
Source: WordNet® (An amazing lexical database of English)
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