"The third sign of the zodiac, so named from its 2 brightest stars, Castor, of the 1st magnitude, farthest to the west, and Pollux of the 2d, farthest to the east. Its constitutent stars form a binary system revolving in about 250 years. The sun is in G. from about May 21st, till about June 21st." — Williams, 1889

Gemini

"The third sign of the zodiac, so named from its 2 brightest stars, Castor, of the 1st magnitude, farthest…

"A zodiacal constellation, giving its name to a sign of the zodiac, lying east of Taurus, on the other side of the Milky Way." -Whitney, 1911

Gemini

"A zodiacal constellation, giving its name to a sign of the zodiac, lying east of Taurus, on the other…