The most common and most likely answer to this crossword clue is the 6 letter word BAFFLE
I've seen this crossword clue in The Guardian
B
A
F
F
L
E
More clues leading to the result BAFFLE
- Puzzle created by regulating device
- Stump wizard raised and rolled pixie under
- Fox first to feature in rewritten fable
- Spirit phenomenal, when up for puzzle
- Fox starts to frolic freely in hay?
- Fox discovered females hiding in hay
- Return of Puck with wonderful puzzle
- Confound the regulator!
- Fox, fine female in pack
- Very loud — pack round to mute sound
Buddy explains!

The straight part
We know that "Fox" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case fox = baffle.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 BAFFLE mean?
BAFFLE noun- A device used to dampen the effects of such things as sound, light, or fluid. Specifically, a baffle is a surface which is placed inside an open area to inhibit direct motion from one part to another, without preventing motion altogether.
- An architectural feature designed to confuse enemies or make them vulnerable.
- (coal mining) A lever for operating the throttle valve of a winding engine.
- To publicly disgrace, especially of a recreant knight.
- To hoodwink or deceive (someone).
- To bewilder completely; to confuse or perplex.
- To foil; to thwart.
- To struggle in vain.