Castor and Pollux

American  

plural noun

Classical Mythology.

1. twin sons of Leda and brothers of Helen, famous for their fraternal affection and regarded as the protectors of persons at sea.

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Castor and Pollux British  

noun

1. classical myth the twin sons of Leda: Pollux was fathered by Zeus, Castor by the mortal Tyndareus. After Castor's death, Pollux spent half his days with his half-brother in Hades and half with the gods in Olympus

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Example Sentences

Above Orion’s right shoulder are the Gemini twins, featuring the stars Castor and Pollux.

From Washington Post

Then trace around the shape in an anticlockwise direction from Capella to Castor and Pollux to Procyon to Sirius, until you reach Rigel again.

From The Guardian

Think of the Gemini stars Castor and Pollux, Romulus and Remus creating Rome, and Plato articulating the dual nature of humanity.

From The Guardian

For evening strolls, find the fleet planet Mercury in the western sky just after sunset, loitering with the constellation Gemini’s twins Castor and Pollux early in June.

From Washington Post

“Castor” is the tighter and more compelling half, whooping and whining in feverish strings and pounding with rhythms that echo the gallop of horses, upon which Castor and Pollux are often depicted riding.

From New York Times