Bet storm involves doctor (6)
I believe the answer is:
gamble
'bet' is the definition.
(thesaurus)
'storm involves doctor' is the wordplay.
'storm' becomes 'gale' (I've seen this before).
'involves' means one lot of letters goes inside another.
'doctor' becomes 'mb' (Bachelor of Medicine, Medicinae Baccalaureus).
'gale' placed around 'mb' is 'GAMBLE'.
(Other definitions for gamble that I've seen before include "Take a risk" , "Place bets" , "Risky enterprise" , "Wager; sounds like frolic" , "Flutter" .)