lubricator

名词 lubricator:

1. a substance capable of reducing friction by making surfaces smooth or slippery
   同义词：lubricant, lubricating substance, lube

lu.bri.ca.tor

n.（名词）
One that lubricates, especially a lubricant.
润滑者：使润滑的人或物质，尤指润滑剂
A device for applying a lubricant.
润滑器：由于加润滑剂的器具