Source : Webster's Revised Unabridged Dictionary (1913)

Dib \Dib\, v. i.
   To dip. [Prov. Eng.] --Walton.

Dib \Dib\, n.
   1. One of the small bones in the knee joints of sheep uniting
      the bones above and below the joints.

   2. pl. A child's game, played with dib bones.

Source : Free On-Line Dictionary of Computing

DIB
     
        {device independent bitmap}