The Collaborative International Dictionary of English v.0.48:

Spelt \Spelt\, n. [AS. spelt, fr. L. spelta.] (Bot.)
   A species of grain (Triticum Spelta) much cultivated for
   food in Germany and Switzerland; -- called also German
   wheat.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Triticum spelta
    n 1: hardy wheat grown mostly in Europe for livestock feed [syn:
         spelt, Triticum spelta, Triticum aestivum spelta]