from The American Heritage® Dictionary of the English Language, 4th Edition
- n.pl. Greek Mythology Castor and Pollux, the twin sons of Leda and brothers of Helen and Clytemnestra, who were transformed by Zeus into the constellation Gemini.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- proper n. The twin brothers Castor and Pollux together.
from The Century Dictionary and Cyclopedia
- In Greek myth, the twin sons of Zeus and Leda, Castor and Polydeuces or Pollux, warrior gods, and tutelary protectors of sailors. At a comparatively late date the Dioscuri were partly confused with the Cabiri.
Greek Dioskouroi : Dios, genitive of Zeus, Zeus; see dyeu- in Indo-European roots + kouroi, pl. of kouros, boy.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Ancient Greek Διόσκουροι (Dióskūroi, "the youths of Zeus"). (Wiktionary)