Course receiving permit for gambling game (8)
I believe the answer is:
roulette
'gambling game' is the definition.
(roulette is a kind of gambling game)
'course receiving permit' is the wordplay.
'course' becomes 'route' (I've seen this before**).
'receiving' means one lot of letters goes inside another.
'permit' becomes 'let' ('let' can be a synonym of 'permit').
'route' enclosing 'let' is 'ROULETTE'.
'for' is the link.
(Other definitions for roulette that I've seen before include "it's for the better, supposedly" , "risky venture" , "If Russian, it's a very dangerous game" , "Spinning-wheel game" , "Whirling numbered wheel" .)