Source : Webster's Revised Unabridged Dictionary (1913)

Sura \Su"ra\, n. [Ar., a step, a degree.]
   One of the sections or chapters of the Koran, which are one
   hundred and fourteen in number.

Source : WordNet®

sura
     n 1: one of the sections (or chapters) in the Koran; "the Quran
          is divided in 114 suras"
     2: the muscular back part of the shank [syn: {calf}]