Meaning & use
lubricant
A substance, such as oil or grease, applied to surfaces to reduce friction between them.
See it in a sentence
Mechanics apply lubricant to the engine's moving parts to prevent excessive wear.
A few drops of lubricant stopped the door hinge from squeaking loudly.
A note on using this word
Lubricant is used both literally for machinery and, informally, for anything that helps a process go more smoothly, as in a social lubricant.
Words with a similar meaning
greaseoil
Choose a synonym to suit the sentence. Meanings can overlap without being identical.
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