The Collaborative International Dictionary of English v.0.48:

Durra \Dur"ra\, n. [Ar. dhorra.] (Bot.)
   A kind of millet, cultivated throughout Asia, and introduced
   into the south of Europe; a variety of Sorghum vulgare; --
   called also Indian millet, and Guinea corn. [Written also
   dhoorra, dhurra, doura, etc.]
   [1913 Webster]

WordNet (r) 3.0 (2006):

durra
    n 1: sorghums of dry regions of Asia and North Africa [syn:
         durra, doura, dourah, Egyptian corn, Indian
         millet, Guinea corn]

The Free On-line Dictionary of Computing (30 December 2018):

Durra

   Description language for coarse-grained concurrency on
   heterogeneous processors.  "Durra: A Task-level Description
   Language", M.R.  Barbacci et al, CMU/SEI-86-TR-3, CMU 1986.