C1 noun /ˈwɔːtəʃɛd/
watershed
分水嶺, 重要な転換点
Meaning
An event or period marking a turning point in a situation; also refers to a ridge dividing two drainage areas.
Example
The independence movement was a watershed in the nation's history.
独立運動は国の歴史の中で分水嶺となった。