Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A substance, such as grease or oil, that reduces friction when applied as a surface coating to moving parts.
  • n. One that helps reduce difficulty or conflict.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A substance used to reduce friction between objects or surfaces.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Lubricating.
  • n. That which lubricates; specifically, a substance, as oil, grease, graphite, etc., used for reducing the friction of the working parts of machinery.

from The Century Dictionary and Cyclopedia

  • Lubricating.
  • n. Any natural or artificial material that may be used to lubricate the rubbing surfaces of machinery, in order to lessen their friction upon each other.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

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

Etymologies

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Examples

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