Definition of Pegasus

Noun: Pegasus pe-gu-sus

(Greek mythology) the immortal winged horse that sprang from the blood of the slain Medusa; was tamed by Bellerophon with the help of a bridle given him by Athena; as the flying horse of the Muses it is a symbol of highflying imagination
A constellation in the northern hemisphere near Andromeda and Pisces