Traditionally associated with πηγή (pēgḗ, “spring, fountain, fountain fed by a spring”), especially used to denote springs of Ocean, where Perseus killed Medusa, from whose blood Pegasus sprang. Some have dismissed this as folk etymology and suggest a Pre-Greek origin because of the -ασος suffix.
- Πήγασος in Liddell & Scott (1940) A Greek–English Lexicon, Oxford: Clarendon Press
- Πήγασος in Liddell & Scott (1889) An Intermediate Greek–English Lexicon, New York: Harper & Brothers
- Woodhouse, S. C. (1910) English–Greek Dictionary: A Vocabulary of the Attic Language, London: Routledge & Kegan Paul Limited, page 1,020