Definition of "Gemini"

Gemini¹

/ˈd͡ʒɛmɪnaɪ/

proper noun
1. (astronomy) A constellation of the zodiac traditionally taken to represent the pair of twins Castor and Pollux in Greek mythology. It contains the stars Castor, Pollux, and Alhena.
2. (astrology) The zodiac sign for the twins, ruled by Mercury and covering May 22 – June 21 (tropical astrology) or June 16 – July 15 (sidereal astrology).
3. (Greek mythology) The twin brothers Castor and Pollux together.
noun
plural Geminis
1. Someone who has the Gemini star sign.
  Quotations
  Danny had decided he was going to try to give things a proper go with Marley’s mum, so was mainly uncontactable because, ironically, as a Gemini, he wasn’t good at focusing on two things at once.
  2022, Candice Carty-Williams, People Person, Trapeze, page 304
2. (obsolete) A pair of something.
  Quotations
  I haue grated vpon my good friends for three Repreeues for you, and your Coach-fellow Nim; or elſe you had look’d through the grate, like a Geminy of Baboones: […]
  c. 1597 (date written), William Shakespeare, “The Merry Wiues of Windsor”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, [Act II, scene ii], page 45, column 1