·noun One of the asteroids. ·see Solar.
II. Calliope ·noun A beautiful species of humming bird (Stellula Calliope) of California and adjacent regions.
III. Calliope ·noun The Muse that presides over eloquence and heroic poetry; mother of Orpheus, and chief of the nine Muses.
IV. Calliope ·noun A musical instrument consisting of a series of steam whistles, toned to the notes of the scale, and played by keys arranged like those of an organ. It is sometimes attached to steamboat boilers.