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Lubricating Oil

Definition:

Lubricating oil refers to a substance, usually in liquid form, that is used to minimize friction, reduce wear and tear, and enhance the performance of machinery or engines by providing a protective film between moving parts.

Examples:

As a noun:

1. The car's engine requires high-quality lubricating oil to maintain its efficiency.
2. Regularly changing the lubricating oil in your bicycle's chain can extend its lifespan.

As a verb (lubricate):

1. Be sure to lubricate the hinges of the door to prevent squeaking.
2. It's important to lubricate the gears of the machine for smooth operation.

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