watershed hourOur editors are putting together more complete content — check back in about 20 minuteswatershed hourwatershed hour — noun名詞1. an event or period that marks an important change1.名詞釋義an event or period that marks an important change例句The election was a watershed moment in the country's history.2. the area of land where all water drains into the same river2.名詞釋義the area of land where all water drains into the same river例句The Mississippi River watershed covers a huge area.