The term 'Cinematic Nightmare Street' can be broken down into three crossword solutions: ELM (3 letters). ELM stands for 'Evil Laughing Man', a character from the horror film series 'Nightmare on ELM Street'. The series follows the story of Freddy Krueger, a serial killer who terrorizes teenagers in their dreams. The title of the series is derived from the street name where the majority of the action takes place.