The most common and most likely answer to this crossword clue is the 11 letter word REVOLUTIONS
I've seen this crossword clue in Financial Times
R
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V
O
L
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Buddy explains!
The straight part
We know that "Turns" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case turns = revolutions.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does REVOLUTIONS mean?
REVOLUTIONS noun- A political upheaval in a government or nation state characterized by great change.
- The removal and replacement of a government, especially by sudden violent action.
- Rotation: the turning of an object around an axis.
- A rotation: one complete turn of an object during rotation.
- In the case of celestial bodies - the traversal of one body through an orbit around another body.
- A sudden, vast change in a situation, a discipline, or the way of thinking and behaving.
- A round of periodic changes, such as between the seasons of the year.
- Consideration of an idea; the act of revolving something in the mind.