LUCUBRATION
lucubration
(noun) laborious cogitation
lucubration
(noun) a solemn literary work that is the product of laborious cogitation
Source: WordNet® 3.1
Etymology
Noun
lucubration (countable and uncountable, plural lucubrations)
Intense and prolonged study or meditation; especially, late at night.
The product of such study; often, writings.
Source: Wiktionary
Lu`cu*bra"tion, n. Etym: [l. lucubratio;cf. F. lucubration.]
1. The act of lucubrating, or studying by candlelight; nocturnal
study; meditation.
After long lucubration I have hit upon such an expedient. Goldsmith.
2. That which is composed by night; that which is produced by
meditation in retirement; hence (loosely) any literary composition.
Thy lucubrations have been perused by several of our friends. Tatler.
Source: Webster’s Unabridged Dictionary 1913 Edition