Any one of a generation of popular, successful American film directors (most of them film-school graduates) who flourished in the 1970s; (more generally) any subsequent young director likened to these.
Origin
1970s.
Definition of movie brat in US English:
movie brat
noun
Any one of a generation of popular, successful American film directors (most of them film-school graduates) who flourished in the 1970s; (more generally) any subsequent young director likened to these.