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lubricate (v.)

1620s, "make slippery or smooth" (especially by the application of an oil), from Latin lubricatus, past participle of lubricare "to make slippery or smooth," from lubricus "slippery; easily moved, sliding, gliding;" figuratively "uncertain, hazardous, dangerous; seductive," from suffixed form of PIE root *sleubh- "to slip, slide." Related: Lubricated; lubricating. Earlier verb was lubrify (early 15c.), from Medieval Latin lubrificare.

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Definitions of lubricate from WordNet

lubricate (v.)
have lubricating properties;
the liquid in this can lubricates well
lubricate (v.)
apply a lubricant to;
lubricate my car
Synonyms: lube
lubricate (v.)
make slippery or smooth through the application of a lubricant;
lubricate the key
From wordnet.princeton.edu