The Collaborative International Dictionary of English v.0.48:

Dongola \Don"go*la\, n.
   1. A government of Upper Egypt.
      [Webster 1913 Suppl.]

   2. same as Dongola kid.

   Dongola kid, D. leather, leather made by the Dongola
      process.

   Dongola process, a process of tanning goatskin, and now
      also calfskin and sheepskin, with a combination of
      vegetable and mineral agents, so that it resembles kid.

   Dongola race, a boat race in which the crews are composed
      of a number of pairs, usually of men and women.
      [Webster 1913 Suppl.]