This is a question for native English speakers, to whom I do not belong. I love the song "Turn! Turn! Turn!" by Pete Seeger for its qualities as a song, for its lyrics and for spiritual reasons which need not be discussed here. Incidentally, the Byrds version was number one (in the USA) on my birthday in December 1965. The lyrics of the verses are obviously taken from the book of Ecclesiastes. However, what does the "Turn" chorus refer to? The planet revolving?