Bet doctor goes in strong wind (6)
I believe the answer is:
gamble
'bet' is the definition.
(I know that bet can be written as gamble)
'doctor goes in strong wind' is the wordplay.
'doctor' becomes 'MB' (Bachelor of Medicine, Medicinae Baccalaureus).
'goes in' indicates putting letters inside.
'strong wind' becomes 'gale' (I've seen this before).
'mb' going within 'gale' is 'GAMBLE'.
(Other definitions for gamble that I've seen before include "Take a chance, speculate" , "Run a risk" , "back" , "punt" , "Place bets" .)