crinoid
Concise Oxford English Dictionary © 2008 Oxford University Press:
crinoid /ˈkrɪnɔɪd, ˈkrʌɪnɔɪd/
▶noun Zoology an echinoderm of a class (Crinoidea) that comprises the sea lilies and feather stars.
– derivatives
crinoidal /-ˈnɔɪd(ə)l/ adjective.
crinoidal /-ˈnɔɪd(ə)l/ adjective.
– origin mod. L. Crinoidea, from Gk krinoeidēs ‘lily-like’, from krinon ‘lily’.
'crinoid' also found in these Oxford entries:

