Learn how to say Echinuses correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word echinus:
1 Zoology a sea urchin.
Genus Echinus, class Echinoidea: several species
2 Architecture a rounded moulding below an abacus on a Doric or Ionic capital.
late Middle English: via Latin from Greek ekhinos ‘hedgehog, sea urchin’