Definition of lubricant
- a social lubricant
The car's axles need more lubricant.
using humor as a social lubricant
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'lubricant.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
: a substance (such as grease or oil) that causes something (such as a machine part) to be slippery and to move more smoothly
: something that makes it easier for people to work or talk with each other
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