bass drum

percussion instrument with a low range, large drum which makes a low deep sound

A bass drum is a large drum that produces a note of low definite or indefinite pitch. There are three general classifications of bass drums: the concert bass drum, the 'kick' drum, and the pitched bass drum. The type usually seen or heard in orchestral or concert band music is the concert bass drum. The 'kick' drum, struck with a beater attached to a pedal, is usually seen on drum kits. The third type, the pitched bass drum, is generally used in marching bands and drum corps. This particular type of drum is tuned to a specific pitch and is usually played in a set of three to five drums. It is the largest drum of the orchestra.
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Noun
1. a large drum with two heads; makes a sound of indefinite but very low pitch
(synonym) gran casa
(hypernym) drum, membranophone, tympan

The largest of the different kinds of drums, having two heads, and emitting a deep, grave sound. See Bass, a.
  

GRANCASSA