Quick definitions from WordNet (contrabass)
▸ noun: largest and lowest member of the violin family
▸ adjective: pitched an octave below normal bass instrumental or vocal range ("Contrabass or double-bass clarinet")
▸ Also see contrabass
▸ noun: largest and lowest member of the violin family
▸ adjective: pitched an octave below normal bass instrumental or vocal range ("Contrabass or double-bass clarinet")
▸ Also see contrabass