More on Oil from Infoplease:

• cod-liver oil - cod-liver oil cod-liver oil, yellowish oil obtained from the liver of the codfish. The oil is rich ...
• drying oil - drying oil drying oil, any of several natural oils which, when exposed to the air, oxidize to form ...
• oil gas - oil gas oil gas, any of a group of fuel gases produced from oil by exposing it to high ...
• castor oil - castor oil castor oil, yellowish oil obtained from the seed of the castor bean. The oil content of ...
• fusel oil - fusel oil fusel oil , oily, colorless liquid with a disagreeable odor and taste. It is a mixture of ...