tubaPronunciation: /ˈtjuːbə/Translate tuba | into German | into Italian | into Spanish Definition of tuba noun a large brass wind instrument of bass pitch, with three to six valves and a broad bell typically facing upwards. a powerful reed stop on an organ with the quality of a tuba. Origin: mid 19th century: via Italian from Latin, 'trumpet'tuba in other Oxford dictionaries Definition of tuba in the US English dictionary
