king penguin

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A large penguin (Aptenodytes patagonicus) of Antarctic regions, having an orange oval on the side of the face and a yellow patch at the base of the throat.

Century Dictionary and Cyclopedia

1. n. The great or Pennant's penguin, Aptenodytes pennanti or A. rex.

Wiktionary

1. n. a large penguin, Aptenodytes patagonicus, that lives on the coast of Antarctica and nearby islands

GNU Webster's 1913

1. n. (Zoöl.) any large species of penguin of the genus Aptenodytes; esp., Aptenodytes longirostris, of the Falkland Islands and Kerguelen Land, and Aptenodytes Patagonica, of Patagonia.

WordNet 3.0

1. n. large penguin on islands bordering the Antarctic Circle