Source : Webster's Revised Unabridged Dictionary (1913)

Oversupply \O`ver*sup*ply"\, v. t.
   To supply in excess.

Oversupply \O"ver*sup*ply`\, n.
   An excessive supply.

         A general oversupply or excess of all commodities. --J.
                                                  S. Mill.

Source : WordNet®

oversupply
     n : the quality of being so overabundant that prices fall [syn:
         {glut}, {surfeit}]
     v : supply with an excess of; "flood the market with tennis
         shoes"; "Glut the country with cheap imports from the
         Orient" [syn: {flood}, {glut}]