Source : Webster's Revised Unabridged Dictionary (1913)

Gib \Gib\, v. t. [imp. & p. p. {Gibbed}; p. pr. & vb. n.
   {Gibbing}.]
   To secure or fasten with a gib, or gibs; to provide with a
   gib, or gibs.

   {Gibbed lathe}, an engine lathe in which the tool carriage is
      held down to the bed by a gib instead of by a weight.