The name of the winged horse that sprang from the blood of Medusa in Greek mythology is Pegasus. Pegasus symbolizes inspiration and poetic creativity, often depicted in art and literature as a majestic creature that connects the earthly and celestial realms. His birth from Medusa's severed head emphasizes themes of transformation and rebirth, marking him as a powerful figure in mythology. Pegasus also plays a vital role in various heroic narratives throughout Greek stories.