I think it comes from the Greek name, you know, because one of Zeus's children was named Pollux.
Gemini
The pollux is the anatomical name for the thumb.
Castor and Pollux are two prominent stars in the constellation Gemini. In Greek mythology, they are known as the twin brothers, sons of Leda. Gemini is one of the twelve zodiac constellations, representing the twins Castor and Pollux.
Sirius, Rigel, Pollux and Castor
He was the son of Zeus and Leda. HIs Greek name was Polydeukes.
Pollux, the head of the more easterly of the two twins (who is also named Pollux). Interestingly (and somewhat confusingly for people who think the designations run in order of brightness), Pollux is actually Beta Geminorum, not Alpha Geminorum (aka Castor).
Pollux is a Greek God but he does not rule over anything.
The Pollux Star is located in the Beta Geminorum
Pollux Gamelabs was created in 2005.
Pollux b was created in 2006.
Hellinsia pollux was created in 1921.
Gemini is a constellation of the zodiac. An alternate name for this constellation is the twins or Castor and Pollux.