DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   alpha
       adj 1: first in order of importance; "the alpha male in the
              group of chimpanzees"; "the alpha star in a constellation
              is the brightest or main star"
       2: early testing stage of a software or hardware product; "alpha
          version"
       n 1: the 1st letter of the Greek alphabet
       2: the beginning of a series or sequence; "the Alpha and Omega,
          the first and the last, the beginning and the end"--
          Revelations