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lube (informal) a lubricant. [2 definitions]
lubricant any material, such as oil, graphite, or grease, that is used to coat closely fitting moving parts and thereby lower friction. [2 definitions]
lubricate to coat or supply with a lubricant. [2 definitions]
lubricious slippery, oily, or smooth. [3 definitions]
lubricity smoothness or slipperiness, esp. the effectiveness of a lubricant as determined by this quality. [3 definitions]
lucent giving off light; shining; luminous. [2 definitions]
lucerne alfalfa.
lucid easy to understand; articulate; clear. [3 definitions]
Lucifer in Christian theology, the rebellious archangel who was cast out of heaven by God; Satan.
luciferase an enzyme that produces bioluminescence in fireflies and certain marine animals such as jellyfish.
Lucite trademark for a clear plastic used esp. as a glass substitute.
luck the supposed force behind the apparently causeless or random occurrence of an event or events; fortune; chance. [2 definitions]
luckily by fortunate chance.
luckless without good luck; attended by bad fortune.
luck out (informal) to experience an instance of extremely good luck.
lucky resulting from or having good fortune. [2 definitions]
lucrative producing monetary gain; profitable.
lucre money (used esp. in a negative sense).
lucubrate to compose scholarly works. [2 definitions]
lucubration laborious study or work, esp. late at night. [3 definitions]
Luddite any of a group of British laborers who between 1811 and 1816 destroyed industrial machinery in the belief that its use produced unemployment.