Aptenodytes longirostris

Penguin Pen"guin, n. [Perh. orig. the name of another bird, and fr. W. pen head + gwyn white; or perh. from a native South American name.] 1. (Zo["o]l.) Any bird of the order Impennes, or Ptilopteri. They are covered with short, thick feathers, almost scalelike on the wings, which are without true quills. They are unable to fly, but use their wings to aid in diving, in which they are very expert. See {King penguin}, under {Jackass}. [1913 Webster]

Note: Penguins are found in the south temperate and antarctic regions. The king penguins ({Aptenodytes Patachonica}, and {Aptenodytes longirostris}) are the largest; the jackass penguins ({Spheniscus}) and the rock hoppers ({Catarractes}) congregate in large numbers at their breeding grounds. [1913 Webster]

2. (Bot.) The egg-shaped fleshy fruit of a West Indian plant ({Bromelia Pinguin}) of the Pineapple family; also, the plant itself, which has rigid, pointed, and spiny-toothed leaves, and is used for hedges. [Written also {pinguin}.] [1913 Webster]

{Arctic penguin} (Zo["o]l.), the great auk. See {Auk}. [1913 Webster]