An oil for lubrication of engines and other components.

(idiomatic, business, ethics, euphemistic) A bribe or extorted money, usually relatively small in amount, provided to a low-level government official or business person, in order to expedite a business decision, shipment, or other transaction, especially in a country where such payments are not unusual.

Any lubricant used during human sexual activity to reduce friction between body parts, or between body parts and other objects.

plural of personal lubricant

A food, beverage, drug or activity that helps people feel more comfortable in social occasions.

(rail transport) a device installed in order to reduce wear to both wheel flanges and the rails in the railway track.

plural of flange lubricator

plural of social lubricant

plural of lubrication payment