ˈpegəsəs noun
Etymology: Latin Pegasus, mythological winged horse fabled to have created by a blow of his hoof the fountain Hippocrene that was supposed to be a source of poetic inspiration, from Greek Pēgasos
1. plural pegasi -əˌsī or pegasuses often capitalized
a. : a fabulous winged horse
many interesting figures of … griffins, pegasi — G.W.Eve
especially : the winged steed thought of as bearing a poet in his flights of fancy
b. : poetic inspiration
each spurs his jaded Pegasus apace — Lord Byron
2.
[New Latin, from Latin Pegasus, mythological winged horse]
a. capitalized : a genus (the type and best known genus of the family Pegasidae) of small chiefly tropical Indo-Pacific marine fishes having a long snout, a small toothless mouth, a body wholly covered with bony plates, pelvic fins of only two rays, and pectoral fins spread horizontally like a pair of wings
b. -es : any fish of the genus Pegasus : sea moth