brittle star
or brit·tle·star
- any echinoderm of the class Ophiuroidea, having the body composed of a central, rounded disk from which radiate long, slender, fragile arms.
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Origin of brittle star
First recorded in 1835–45
Also called serpent star.
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018