omphalos

But for classical music, it’s the very omphalos, everything’s sort of seated, and it’s the hub.

All day long she sat over a hole in the ground, the omphalos, the navel of the earth, breathing petrochemical fumes escaping from underneath.

On the right, the god is seated on the omphalos, holding up his right hand.

Yes; but if not of the earth, for earth's tenant Jerusalem was the omphalos of mortality.

This last summer he made a tour through the centre of the island, and obtained boreal shells at Buchlyvie in Stirlingshire,—the omphalos of Scotland.