Source : Webster's Revised Unabridged Dictionary (1913)

Petrol \Pe*trol"\, n.
   Petroleum. [R.]

Source : WordNet®

petrol
     n : a volatile flammable mixture of hydrocarbons (hexane and
         heptane and octane etc.) derived from petroleum; used
         mainly as a fuel in internal-combustion engines [syn: {gasoline},
          {gasolene}, {gas}]