Real Dictionary

muse
countable noun: A muse is someone who gives an artist ideas or a desire to create art, poetry, or music.
verb: If you muse on something, you think about it, usually saying or writing what you are thinking at the same time.

Muse in American English
a musing; deep meditation
any of the Muses
to think deeply and at length; meditate
to think or say meditatively
intransitive verb: to think or meditate in silence, as on some subject
noun: any of a number of sister goddesses, originally given as Aoede (song), Melete (meditation), and Mneme (memory), but latterly and more commonly as the nine daughters of Zeus and Mnemosyne who presided over various arts: Calliope (epic poetry), Clio (histor
transitive verb: to meditate on

Muse in British English
noun: any of nine sister goddesses, each of whom was regarded as the protectress of a different art or science. Daughters of Zeus and Mnemosyne, the nine are Calliope, Clio, Erato, Euterpe, Melpomene, Polyhymnia, Terpsichore, Thalia, and Urania

muse in British English 1
noun: a state of abstraction
verb: to reflect (about) or ponder (on), usually in silence

muse in British English 2
noun: a person who inspires a creative artist, esp a poet