An unctuous substance expressed or drawn from several animal and vegetable substances. The distinctive characters of oil are inflammability, fluidity, and insolubility in water. Oils are fixed or fat, and volatile or essential. They have a smooth feel, and most of them have little taste or smell. Animal oil is found in all animal substances. Vegetable oils are produced by expression, infusion or distillation.

, n. A color made by grinding a coloring substance in oil.