echinus means A sea urchin.
Etymology
From Latin echīnus (“hedgehog; sea urchin”), from Ancient Greek ἐχῖνος (ekhînos).
noun
- A sea urchin.“'It is a sea-urchin - a common echinus. Nature repeats itself in many forms regardless of the size. This echinus is a model, a prototype, of the world.'”
- The rounded moulding forming the bell of the capital of the Grecian Doric style, which is of a peculiar elastic curve.
- The quarter-round moulding (ovolo) of the Roman Doric style.
- The egg-and-anchor or egg-and-dart moulding, because often identified with the Roman Doric capital.