Gemini: Meaning and Definition of

Gem•i•ni

1. the Twins, a zodiacal constellation between Taurus and Cancer containing the bright stars Castor and Pollux.
1. the third sign of the zodiac: the mutable air sign. See illus. underzodiac.
2. a person born under this sign, usually between May 21st and June 20th.
3. a two-person U.S. spacecraft designed for orbital rendezvous and docking: used in 1965–66 in various experiments preparatory to a landing on the moon.