1. Short-legged flightless birds of cold southern especially Antarctic regions having webbed feet and wings modified as flippers

Derived forms: penguins

Type of: sphenisciform seabird

Part of: family Spheniscidae, Spheniscidae

Encyclopedia: Penguin Penguin, Tasmania

• Sivan
• Sivapithecus
• Siwan
• six
• Six Nations
• six times
• Six-Day War
• six-footer
• six-gilled shark
• six-gun
• six-lined racerunner
• six-membered
• six-pointed
• six-shooter
• six-sided
• six-spot
• sixer
• sixfold
• sixpack
• sixpence
• sixpenny
• sixpenny nail
• sixsome
• norfolk island pine
• Norfolk jacket