The most common and most likely answer to this crossword clue is the 6 letter word GAMBLE
I've seen this crossword clue in Financial Times
G
A
M
B
L
E
More clues leading to the result GAMBLE
- It’s good to wander in a punt
- Bad weather keeps doctor in a flutter
- Speculation is in the wind about doctor
- Chance taken by doctor in storm
- Chance of good walk?
- Good walk may be a chancy thing
- Good stroll’s become better
- Doctor caught in high wind might mean to take a chance
- Become better taking tips from baseball into cricket perhaps
- Bet doctor's caught in the rain
Buddy explains!

The straight part
We know that "flutter" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case flutter = gamble.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 GAMBLE mean?
GAMBLE noun- A bet or wager.
- A significant risk, undertaken with a potential gain.
- A risky venture.
- To take a risk, with the potential of a positive outcome.
- To play risky games, especially casino games, for monetary gain.
- To risk (something) for potential gain.
- To interact with equipment at a casino