Pegasus

 
Pronunciation: /ˈpɛgəsəs/
  • 1 Greek Mythology a winged horse which sprang from the blood of Medusa when Perseus cut off her head.
  • 2 Astronomy 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.

Origin:

via Latin from Greek