The term 'Hollywood Crosser' refers to an individual who has achieved success in both the film and music industries. The crossword solution for this term is 'VINE, ' which is a reference to the popular video-sharing app of the same name. VINE was launched in 2013 and quickly became a platform for aspiring entertainers to showcase their talents. Many Hollywood Crossers have used VINE to gain recognition and launch their careers in both the film and music industries.