lubricant

Definition of Lubricant in English :

a substance capable of reducing friction by making surfaces smooth or slippery

WordNet Lexical Database for English. Princeton University. 2010.

Lubricant

noun

1.

a lubricating substance, such as oil

adjective

2.

serving to lubricate

adjective

1.

reducing friction by providing a smooth film as a covering over parts that move against each other; lubricating

noun

2.

a substance for reducing friction in this way, as oil or grease

n.

1. A substance, such as grease or oil, that reduces friction when applied as a surface coating to moving parts.

2. A slippery liquid, gel, or oil that is used to reduce friction on or soreness of body tissue.

3. One that facilitates conversation or cooperation: saw coffee as a social lubricant.