The Collaborative International Dictionary of English v.0.48:
Comatulid \Co*mat"u*lid\, n. (Zool.) Any crinoid of the genus Antedon or allied genera. [1913 Webster]WordNet (r) 3.0 (2006):
comatulid n 1: free-swimming stalkless crinoid with ten feathery arms; found on muddy sea bottoms [syn: feather star, comatulid]