Hardhead Reference Libraries
The Hardhead (aythya australis), also known as the White-eyed Duck is the only true diving duck found in Australia. Hardheads are familiar in the south-east of Australia, especially in the Murray-Darling Basin, but also in the wetter country near the coasts. They are somewhat drifting in normal years, but disperse widely in times of drought. Significant numbers reach as far afield as New...
- The navel or umbilicus.
- In Greek archaeology: A central boss, as on a shield, a bowl, etc.
- A sacred stone in the temple of Apollo at Delphi, believed by the Greeks to mark the 'navel' or exact center-point of the earth.