2. (Science: zoology) A large and handsome American butterfly (Basilarchia, or Limenitis, archippus). Its wings are orange-red, with black lines along the nervures and a row of white spots along the outer margins. The larvae feed on willow, poplar, and apple trees.
Origin: F. Vice-roi; pref. Vice- in the place of (L. Vice) _ roi a king, L. Rex. See Vice, and Royal.