1. The eldest and wisest of the Nine Muses of Greek mythology. She is the
muse of
epic poetry, commonly known as Homer's
muse, being the inspiration for Homer's Iliad and Odyssey.
2. A type of musical instrument which produces sound by sending a gas (either steam or, more recently, compressed air) through large whistles.
3. Title of a story in Neil Gaiman's Sandman graphic novels, in which the Greek
muse Calliope is featured - although here she is misidentified as the youngest muse.