Source : Webster's Revised Unabridged Dictionary (1913)

Blat \Blat\, v. i.
   To cry, as a calf or sheep; to bleat; to make a senseless
   noise; to talk inconsiderately. [Low]

Blat \Blat\, v. t.
   To utter inconsiderately. [Low]

         If I have anything on my mind, I have to blat it right
         out.                                     --W. D.
                                                  Howells.

Source : WordNet®

blat
     v : cry plaintively; "The lambs were bleating" [syn: {bleat}, {blate},
          {baa}]
     [also: {blatting}, {blatted}]

Source : Free On-Line Dictionary of Computing

blat
     
        1. {blast}.
     
        2. See {thud}.
     
        [{Jargon File}]