The most common and most likely answer to this crossword clue is the 4 letter word GUST
G
U
S
T
More clues leading to the result GUST
- Sudden blast son's taken in belly
- Visitor losing energy and puff
- American in fast car, possibly a Zephyr
- Heartless visitor delivers blow
- Blast endless enthusiasm
- Relish releasing last burst of wind
- No end of enthusiasm: ‘It’s a blast!’
- Flaubert does not ‘ave wind
- Wind in last two-thirds of month
- ... strong wind, gold gone in a month
Buddy explains!

The straight part
We know that "puff" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case puff = gust.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 GUST mean?
GUST noun- A strong, abrupt rush of wind.
- (by extension) Any rush or outburst (of water, emotion, etc.).
- To blow in gusts.
- The physiological faculty of taste.
- Relish, enjoyment, appreciation.
- Intellectual taste; fancy.
- To taste.
- To have a relish for.