ˌcentral ˈcasting BrE AmE noun [uncountable]
1 . an organization that supplies actors for small roles in films, plays etc
2 . if you say that someone has come from central casting, you mean that they look like the perfect example of a particular type of person, as if an actor is playing the part:
Wearing black shoes and a pinstripe suit, he looked like central casting’s idea of the perfect civil servant.