Source : Webster's Revised Unabridged Dictionary (1913)

Soudan \Sou*dan"\, n.[F.]
   A sultan. [Obs.]

Source : WordNet®

Soudan
     n 1: a republic in northeastern Africa on the Red Sea; achieved
          independence from Egypt and the United Kingdom in 1956;
          involved in state-sponsored terrorism [syn: {Sudan}, {Republic
          of the Sudan}]
     2: a region of northern Africa south of the Sahara and Libyan
        deserts; extends from the Atlantic to the Red Sea [syn: {Sudan}]