double bass
US /ˌdʌb.əl ˈbeɪs/
UK /ˌdʌb.əl ˈbeɪs/

1.
contrabaixo
the largest and lowest-pitched bowed string instrument in the modern symphony orchestra, with four or five strings and a range of about three and a half octaves
:
•
She plays the double bass in the school orchestra.
Ela toca contrabaixo na orquestra da escola.
•
The deep resonance of the double bass filled the concert hall.
A ressonância profunda do contrabaixo preencheu a sala de concertos.