Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
brittle-star is a noun meaning "an animal resembling a starfish with fragile whiplike arms radiating from a small central disc". It carries one recorded sense.
an animal resembling a starfish with fragile whiplike arms radiating from a small central disc
Definitions, synonyms and semantic relations for brittle-star come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.