a person or thing that lubricates.

1750–60; lubricate + -or2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
lubricator (ˈluːbrɪˌkeɪtə)
1.  a person or thing that lubricates
2.  a device for applying lubricant

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Example sentences
The valve stem lubricator reservoir, pumps and tubing were filled with protective oil.
The plunger arrives and is captured in the lubricator, situated across the upper lubricator outlet.
The column bearings are oil lubricated from a solenoid operated oil lubricator.
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