yes
The Double Bass.
Because the double bass is the largest instrument in the orchestra.
the double bass (as in bass like a cello not a guitar)
That would be the Double Bass, also knows as a Bass Fiddle.
The double bass is the lowest part in the string section of a symphony orchestra. It is usually the lowest part in chamber orchestras as well, if there is no double-bass the lowest part will be played by the cellos. (Do not confuse this with a basso-continuo, which is a harpsichord part in Baroque era (1600-1750) music.)
String instruments are instruments that have strings on them, eg. Guitar or Violin.
The four stringed instruments in an orchestra: the violin, the viola, the cello, and the double bass.
In a string orchestra, the instrument with the lowest pitch is the Bass (also called Double Bass, String Bass, Upright Bass, and Contrabass)
in a string orchestra the instruments are: Bass Violin Viola Cello.
The smallest orchestral stringed instrument is the Violin. The size of stringed instruments, from smallest to largest, is as follows: Violin Viola Cello Double Bass
The lowest string on a four string double bass is an E string. If you have a fairly rare five string double bass then the lowest fifth string is a B string.
The bass viole ... or simply, bass.