1. Petrol treated with a lead compound to reduce motor knocks
   "combustion of leaded petrol released lead into the air where it could cause lead poisoning"
   - leaded gasoline [N. Amer]

Type of: gas [N. Amer], gasolene [N. Amer], gasoline [N. Amer], petrol [Brit]

Encyclopedia: Leaded petrol

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