1. A four-wheeled carriage (with or without a top), open, or having no side pieces, in front of the seat. It is drawn by one or two horses. 2. See Phaëthon. 3. (Zoöl.) A handsome American butterfly (Euphydryas, or Melitæa, Phaëton). The upper side of the wings is black, with orange-red spots and marginal crescents, and several rows of cream-colored spots; -- ca...