A common name for the bass drum of the pair, used interchangeably with its formal name.
An everyday name for the bayan, the larger bass drum — common in teaching rooms and among makers. Duggi names the related small kettle drum used in folk and light contexts.
The word is worth knowing mainly for fluency: an instruction to "open up the dagga" simply means the bayan. See Bayan for the drum itself.
Further reading
Rebecca Stewart, The Tabla in Perspective (PhD dissertation, University of California, Los Angeles, 1974).