[1] : The Collaborative International Dictionary of English v.0.48

maccaroni wheat \maccaroni wheat\ n.
   a type of wheat triticum durum with hard dark-colored
   kernels high in gluten and used for bread and pasta; grown
   especially in south russia, north africa, and north central
   north america.

   syn: durum, durum wheat, hard wheat, triticum durum,
        triticum turgidum.
        wordnet 1.5
see also:
triticum durum triticum turgidum 

[2] : WordNet (r) 2.0

triticum durum
     n : wheat with hard dark-colored kernels high in gluten and used
         for bread and pasta; grown especially in southern russia,
         north africa, and northern central north america syn: durum,
          durum wheat, hard wheat, triticum turgidum, macaroni
         wheat
see also:
durum durum wheat hard wheat triticum turgidum macaroni wheat 

Durum >> D Words
Durum, definition of term: Durum
durum_pag1.html

Triticum >> T Words
Triticum, definition of term: Triticum
triticum_pag1.html

Durum Wheat >> D Words
Durum Wheat, definition of term: Durum Wheat
durum+wheat_pag1.html