Source : Webster's Revised Unabridged Dictionary (1913)

Sorghum \Sor"ghum\, n. [NL., probably of Chinese origin.] (Bot.)
   (a) A genus of grasses, properly limited to two species,
       {Sorghum Halepense}, the Arabian millet, or Johnson grass
       (see {Johnson grass}), and {S. vulgare}, the Indian
       millet (see {Indian millet}, under {Indian}).
   (b) A variety of {Sorghum vulgare}, grown for its saccharine
       juice; the Chinese sugar cane.

Source : WordNet®

sorghum
     n 1: economically important Old World tropical cereal grass
     2: made from juice of sweet sorghum [syn: {sorghum molasses}]