watershed

For Hulse, a Miss South Dakota turned Republican state senator, it seemed not just a pageant victory but a cultural watershed.

Myers’s case turned out to be a watershed event for aircrew in the U.S., recognized as the first time a court has ruled that fume exposure caused a plaintiff’s long-term health conditions.

"It was a watershed in my life because it made me realise there was a world outside Byres Road," he once said, referring to the street at the heart of the city's West End.

"This was a systemic failure that demands real accountability and must serve as a watershed moment to end the cruel practice of keeping elephants and other social animals isolated in our zoos for good."

For the Beatles and the world, “Rubber Soul” marked a watershed moment — an unmistakable harbinger for innovative and even more provocative works of musical art.