1995 De Niro film (6)
I believe the answer is:
'1995 de niro film' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for casino that I've seen before include "where one can lose a lot of money" , "You can win a fortune here" , "Imitate" , "Where our betters show" , "Gambling den" .)