\Cal*li"o*pe\ (k[a^]l*l[imac]"[-o]*p[-e]), n. [L.
Calliope, Gr. Kallio`ph, lit, the beautiful-voiced; pref.
kalli- (from kalo`s beautiful) + 'o`ps, 'opo`s, voice.]
1. (Class. Myth.) The Muse that presides over eloquence and
   heroic poetry; mother of Orpheus, and chief of the nine
   Muses.

2. (Astron.) One of the asteroids. See {Solar}.

3. 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.

4. (Zo["o]l.) A beautiful species of humming bird ({Stellula
   Calliope}) of California and adjacent regions.