What does CORNER mean?

noun

1. a place off to the side of an area“he tripled to the rightfield corner”
2. the point where two lines meet or intersect“the corners of a rectangle”
3. an interior angle formed by two meeting walls“a piano was in one corner of the room”
4. the intersection of two streets“standing on the corner watching all the girls go by”
5. the point where three areas or surfaces meet or intersect“the corners of a cube”
6. a small concavity
7. a temporary monopoly on a kind of commercial trade“a corner on the silver market”
8. a predicament from which a skillful or graceful escape is impossible“his lying got him into a tight corner”