Way to get round permit for gambling game (8)
I believe the answer is:
roulette
'gambling game' is the definition.
(roulette is a kind of gambling game)
'way to get round permit' is the wordplay.
'way' becomes 'route' (route is a kind of way).
'to get round' indicates putting letters inside.
'permit' becomes 'let' ('let' can be a synonym of 'permit').
'route' going around 'let' is 'ROULETTE'.
'for' is the link.
(Other definitions for roulette that I've seen before include "gambling business" , "Casino game" , "Spinning-wheel game" , "Whirling numbered wheel" , "Wheel for the gambler" .)