penguin
Concise Oxford English Dictionary © 2008 Oxford University Press:
penguin/ˈpeŋɡwɪn/
▶noun a flightless black and white seabird of the southern hemisphere, with wings used as flippers. [Family Spheniscidae : several species.]
– origin C16 (orig. denoting the great auk): of unknown origin.
'penguin' also found in these Oxford entries:

