D-Girl, or D Girl, n. Slang [Origin: Hollywood, Calif. (1930's? 40's?)] 1: A female executive who toils in the movie business, often fruitlessly and always without credit, procuring and developing screenplays, books, plays, articles and other literary properties for cinematic adaptation, and sometimes even production. 2:Short for Development Girl 3: Variant of Story Editor, Director of Development, Vice President of Development, Creative Director, or any impressive-sounding title her boss will let her get away with.