The Collaborative International Dictionary of English v.0.48:
Penguin \Pen"guin\ (p[e^]n"gw[i^]n), n. [Perh. orig. the name of
another bird, and fr. W. pen head + gwyn white; or perh. from
a native South American name.]
1. (Zool.) 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,
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
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.]
Arctic penguin (Zool.), the great auk. See Auk.