noun
Definition: A thick, slippery liquid that comes from plants, animals, or minerals, often used for cooking, fueling engines, or making products.
Example: She added a few drops of oil to the frying pan before cooking the vegetables.
transitive verb
Definition: To apply a liquid substance, often derived from plants or animals, to a surface to make it smooth or to reduce friction.
Example: She decided to oil the squeaky door hinges to make them work better.