reducing friction by providing a smooth film as a covering over parts that move against each other; lubricating
Origin of lubricantClassical Latin lubricans, present participle of lubricare: see lubricate
a substance for reducing friction in this way, as oil or grease
- A substance, such as grease or oil, that reduces friction when applied as a surface coating to moving parts.
- A slippery liquid, gel, or oil that is used to reduce friction on or soreness of body tissue.
- One that facilitates conversation or cooperation: saw coffee as a social lubricant.