double bass

US /ˌdʌb.əl ˈbeɪs/
UK /ˌdʌb.əl ˈbeɪs/
"double bass" picture
1.

contrabajo

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.
Ella toca el contrabajo en la orquesta de la escuela.
The deep resonance of the double bass filled the concert hall.
La profunda resonancia del contrabajo llenó la sala de conciertos.