To study by night, or work produced at night. From "lucubrare" (to work by lamplight). Also the product of such study -- usually used in plural.
When Katherine realized that Sasha was online at 4:30am, she suspected that significant lucubrations had been produced.
by sashamd November 1, 2003
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1. work hard and late into the night, e.g. cramming for a test.

Masturbate within a grove of trees lucus-lat. for grove
He had to lucubrate for his finals
by Thomas Hardy June 22, 2007
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Your eloquence obviously comes from lucubration.
by CLP3 October 2, 2009
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