U.S. [Gr. καλλιόπη (beautiful-voiced), the ninth of the Muses, presiding over eloquence and heroic poetry.] An instrument consisting of a series of steam-whistles toned to produce musical notes, played by a keyboard like that of an organ.
1863. Russell, Diary India, I. 269. The whistle sounds, and the calliope shrieks out ‘Dixie’ incessantly.
