Definition from Wiktionary, the free dictionary
From Ancient Greek Σελήνη (Selḗnē).
Proper noun 
- (Greek mythology) The goddess of the Moon; daughter of Hyperion and Theia, sister of Helios and Eos, mother of the Menae, (the goddesses of the lunar months within a olympiad). Her Roman counterpart is Luna.
- (rare) A female given name.
- (poetic) the moon
Greek moon goddess