The term Broadway's 'Billy ___' is referring to the musical Billy Elliot, which is based on the 2000 British film of the same name. The crossword solution for this term is 'Elliot, ' which is a six-letter word. Billy Elliot is a musical about a young boy from a working-class family in Northern England who discovers a passion for dance. The show has been performed on Broadway since 2008 and has won numerous awards.