Emily Dickinson Lexicon

Luna, proper n. [L. lūna, moon.]

Moon goddess; radiant one; Greek lunar deity; daughter of Hyperion and Theia; sister of Helius, the sun god; Roman name for the Greek goddess Selene, who wears a lunar crescent on her head as she rides a silver chariot across the night sky; [fig.] nighttime; Earth's natural satellite personified.