Turning Point
WordNet
noun
(1) The intersection of two streets
"Standing on the corner watching all the girls go by"
(2) 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"
WiktionaryText
Noun
- A decisive point at which a significant change or historical event occurs, or at which a decision must be made.
- A maximum or minimum on a graph.
- A crossroads.
- A T-junction.