Source : Webster's Revised Unabridged Dictionary (1913)

Sawhorse \Saw"horse`\, n.
   A kind of rack, shaped like a double St. Andrew's cross, on
   which sticks of wood are laid for sawing by hand; -- called
   also {buck}, and {sawbuck}.

Source : WordNet®

sawhorse
     n : a framework for holding wood that is being sawed [syn: {horse},
          {sawbuck}, {buck}]