echinus
noun
echi·nus
| \ i-ˈkī-nəs
\
\
plural echini\ i-ˈkī-ˌnī
\
\
Definition of echinus
1
: sea urchin
2a
: the rounded molding that lies directly beneath the abacus in the capital of a column in the Greek Doric order
b
: a similar member in other orders
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