Definition of Pegasus in English:

Pegasus

proper noun

  • 1Greek Mythology
    A winged horse that sprang from the blood of Medusa when Perseus cut off her head.

    1. 1.1plural Pegasi An imaginary animal in the form of a winged horse.
      ‘at the end of the book he gets eaten by a dragon when he's trying to ride a Pegasus’
  • 2Astronomy
    A large northern constellation, said to represent a winged horse. The three brightest stars, together with one star of Andromeda, form the prominent Square of Pegasus.

    1. 2.1as genitive Pegasi /-sʌɪ/ Used with preceding letter or numeral to designate a star in the constellation Pegasus.
      ‘the star Zeta Pegasi’

Origin

Via Latin from Greek.

Pronunciation

Pegasus

/ˈpɛɡəsəs/