contrabass

美 [ˈkɑːntrəbeɪs]英 [ˈkɒntrəbeɪs]

contrabass

adj.

of a musical instrument 乐器倍低音的
with a range of notes one octave below that of a bass instrument

a contrabass clarinet

倍低音单簧管

noun

largest and lowest member of the violin family: Synonym: bass fiddle bass viol bull fiddle double bass string bass

adj

pitched an octave below normal bass instrumental or vocal range: contrabass or double-bass clarinet; Synonym: double-bass

数据来源：WordNet

1

Bombardon : a brass instrument resembling a tuba but with a lower pitch ; a bass or contrabass tuba .

低音大号：一种与大号相似却音调较低的铜管乐器；低音或最低音大号。
2

Contrabass or double-bass clarinet .

最低音或者倍低音黑管。