DuckCorp Dico

Found one definition

1.                 From The Collaborative International Dictionary of English v.0.48:
                   
   
   
                   
                     
   Low \Low\ (l[=o]), v. i. [imp. & p. p. Lowed (l[=o]d); p. pr.
      & vb. n. Lowing.] [OE. lowen, AS. hl[=o]wan; akin to D.
      loeijen, OHG. hl[=o]jan, hluojan.]
      To make the calling sound of cows and other bovine animals;
      to moo.
      [1913 Webster]
            The lowing herd wind slowly o'er the lea. --Gray.
      [1913 Webster]