penguin
- A flightless seabird of the family Spheniscidae, found in the Southern Hemisphere, especially Antarctica, characterized by its black and white plumage, upright posture, and waddling gait. nounThe penguin waddled across the ice towards its colony.Penguins are excellent swimmers, using their wings as flippers underwater.
- A term used in computing to refer to the Linux mascot, Tux, which is a cartoon penguin. nounThe Linux penguin is a symbol of the open-source software community.Tux the penguin is often used in promotional materials for Linux.