among the poets, a horse imagined to have wings; being that whereon Bellerophon was fabled to be mounted when he engaged the chimera. See CHIMERA.

The opening of the fountain Hippocrene on mount Helicon, is ascribed to a blow of Pegasus's hoof. It was feigned to have flown away to heaven, where it became a constellation. Hence

astronomy, the name of a constellation of the northern hemisphere, in form of a flying horse. See ASTRONOMY, No 206.