Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
lionfish is a noun meaning "brightly striped fish of the tropical Pacific having elongated spiny fins". It carries one recorded sense.
brightly striped fish of the tropical Pacific having elongated spiny fins
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for lionfish come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.