Webster’s Revised Unabridged Dictionary · 1913
Gemini
Gem′i·ni (jĕm′ĭ·nī), n. pl. [L., twins, pl. of geminus; cf. Skr. jāmi related as brother or sister.] (Astron.) A constellation of the zodiac, containing the two bright stars Castor and Pollux; also, the third sign of the zodiac, which the sun enters about May 20th.