oil

Any of numerous mineral, vegetable, or synthetic substances or animal or vegetable fats that are generally slippery, combustible, viscous, liquid or liquefiable at room temperatures, soluble in various organic solvents such as ether but not in water, and used in a great variety of products, especially lubricants and fuels.

Petroleum.

A petroleum derivative, such as a machine oil or lubricant.

A protective or cosmetic liquid applied to the skin or hair.

Oil paint.

A painting done in oil paint.

To lubricate, supply, cover, or polish with oil.

(hand/palm) To bribe.

(hand/palm) To give a tip to.