Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
contrabass is a noun and adjective meaning "largest and lowest member of the violin family". It carries 2 recorded senses.
largest and lowest member of the violin family
pitched an octave below normal bass instrumental or vocal range
“contrabass or double-bass clarinet”
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 contrabass come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.