n.
1.the position of a prominent or well-known object in a particular landscape
2.an event marking a unique or important historical change of course or one on which important developments depend
3.a mark showing the boundary of a piece of land
4.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
Idiom of the Day
reach first base with (someone or something)
to make a major advance with someone or something
The salesperson was unable to reach first base with the buyer.