One that lubricates, especially a lubricant.(noun)
A device for applying a lubricant.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "lubricator" in a sentence
"The "lubricator" now being used on nearly all the railroad engines in the United States was invented by a colored man, Mr.E. McCoy, of Detroit, Michigan."
"(This is done to make certain that no back-fire will occur), then to on lubricator."
"In the good old days, when the brethren were united against the Soviet devil, all shared equally in the drug-running trade, under the benevolent eye of that great lubricator of illicit commerce, the CIA."