(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.

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

plural of lubricating oil

An oil for lubrication of engines and other components.

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

plural of personal lubricant

plural of lubrication payment

plural of social lubricant