- (greekmyth) A winged horse fabled to have sprung from the body of Medusa when she was slain. He is noted for causing, with a blow of his hoof, Hippocrene, the inspiring fountain of the Muses, to spring from Mount Helicon. Bellerophon rode Pegasus when he defeated the Chimaera.
- (constellation) An autumn constellation of the northern sky, near the vernal equinoctial point, said to resemble the mythical horse. Its three brightest stars, with the brightest star of Andromeda, form the square of Pegasus. It contains the stars Markab and Algenib.
Etymology: From < Ancient Greek (polytonic, ) (Pegasos), from (pege), a spring, fount.
- French: Pégase
- German: Pegasus
- Italian: Pegaso
- Spanish: Pegaso
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