Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
rudderfish is a noun meaning "food and game fish around Bermuda and Florida; often follow ships". It carries 2 recorded senses.
food and game fish around Bermuda and Florida; often follow ships
fish having the habit of following ships; found in North American and South American coastal waters
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 rudderfish come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.