lubricant
noun
[ ˈluːbrɪk(ə)nt ]
• a substance used for lubricating an engine or component, such as oil or grease.
• "squirt in a lubricant on a regular basis"
Similar:
grease,
oil,
lubricator,
lubrication,
emollient,
lotion,
unguent,
lard,
fat,
moisturizer,
lubricant
adjective
• lubricating.
• "a thin lubricant film"
Origin:
early 19th century: from Latin lubricant- ‘making slippery’, from the verb lubricare (see lubricate).