Pollux Look up Pollux at Dictionary.com
twin brother of Castor, name of the beta star of Gemini, 1520s, from Latin, from Greek Polydeukes, literally "very sweet," from polys "much" (from PIE root *pele- (1) "to fill") + deukes "sweet" (see glucose). The contraction of the name in Latin is perhaps via Etruscan [Klein].