The most common and most likely answer to this crossword clue is the 4 letter word BIRL
B
I
R
L
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 = birl.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 BIRL mean?
BIRL verb- To pour a drink (for).
- To drink deeply or excessively; carouse.
- A girl of boyish appearance.