Turning point Meaning, Definition & Usage

  1. noun an event marking a unique or important historical change of course or one on which important developments depend
    landmark; watershed.
    • the agreement was a watershed in the history of both nations
  2. noun the intersection of two streets
    corner; street corner.
    • standing on the corner watching all the girls go by

WordNet

Definitions
  1. the point upon which a question turns, and which decides a case.

Webster 1913