Cynthia

from The Century Dictionary.

• noun [lowercase] In botany, the Virginia *goat's-beard (which see).
• noun In mythology, one of the names given to Artemis (Diana), from her reputed birthplace, Mount Cynthus in the island of Delos.
• noun Hence In poetry, a name of the moon, the emblem of Diana.
• noun In zoöl.: A genus of nymphalid butterflies, containing such as the painted-lady, C. cardui.
• noun A genus of simple sessile tunicaries, of the family Ascidiidæ, with coriaceous body-wall and four-lobed oral and atrial orifices, Savigny, 1827.
• noun A genus of crustaceans.
• noun A genus of Coleoptera.
• noun A genus of Diptera.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Classical mythology) the virgin goddess of the hunt and the moon; daughter of Leto and twin sister of Apollo; identified with Roman Diana.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• proper noun poetic The moon, personified.
• proper noun A female given name.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun (Greek mythology) the virgin goddess of the hunt and the Moon; daughter of Leto and twin sister of Apollo; identified with Roman Diana