1
[ noun ] an event marking a unique or important historical change of course or one on which important developments depend

Synonyms

landmark watershed

Examples

"the agreement was a watershed in the history of both nations"

Used in print

(Philip Reaves, "Who Rules the Marriage Bed?"...)

When was the turning_point ?

2
[ noun ] the intersection of two streets

Examples

"standing on the corner watching all the girls go by"

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