A devil costume is typically a costume that consists of a red or black outfit with horns, a tail, and a pitchfork. The term 'devil costume' can also refer to any costume that has a devil-like theme. The crossword solution for the term 'devil costume' is PRADA, which is a luxury fashion brand founded in 1913 by Italian designer Mario Prada. Prada is known for its high-end clothing and accessories, and it has become a popular choice for those looking to create a devil costume.