echinus
Concise Oxford English Dictionary © 2008 Oxford University Press:
echinus /ɪˈkʌɪnəs/
▶noun Architecture a rounded moulding below an abacus on a Doric or Ionic capital.
– origin ME: via L. from Gk ekhinos ‘hedgehog, sea urchin’.
'echinus' also found in these Oxford entries:

