The most common and most likely answer to this crossword clue is the 7 letter word REVOLVE
I've seen this crossword clue in The Times
R
E
V
O
L
V
E
More clues leading to the result REVOLVE
- Turn very morose in the end after sweetheart returns
- Right-armer’s beginning to develop spin
- Turn very regretful at heart after sweetheart's upset
- Go round with sawn-off gun
- Circle with sawn-off firearm?
- Turn back European, very amorous type
- Turn clergyman against love, that’s ridiculous
- Turn Casanova back to extremes of virtue
- Turn clipped gun
- Enthusiast's put up with empty vehicle for spin
Buddy explains!

The straight part
We know that "spin" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case spin = revolve.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 REVOLVE mean?
REVOLVE noun- The rotation of part of the scenery within a theatrical production.
- The rotating section itself.
- A radical change; revolution.
- (Physical movement.)
- (Mental activity.)