noun, genitive Peg·a·si [peg-uh-sahy] /ˈpɛg əˌsaɪ/ for 2.
Examples from the Web for pegasi
Historical Examples of pegasi
noun Latin genitive Pegasi (ˈpɛɡəˌsaɪ)
winged horse in Greek mythology, late 14c., from Latin, from Greek Pegasos, usually said to be from pege "fountain, spring; a well fed by a spring" (plural pegai), especially in "springs of Ocean," near which Medusa was said to have been killed by Perseus (Pegasus sprang from her blood). But this may be folk etymology, and the suffix -asos suggests a pre-Greek origin [Klein].