Lubrication

noun

1. The act of lubricating, or the state of being lubricated.
2. The act of lubricating; the act of making slippery.
3. The application of a substance (a lubricant), between moving surfaces in contact in order to reduce friction and minimize heating.
4. the condition of having been made smooth or slippery by the application of a lubricant
5. an application of a lubricant to something