1590s, "close study or thought;" 1610s, "a product of such study or thought, literary work showing signs of too-careful elaboration," from Latin lucubrationem (nominative lucubratio) "nocturnal study, night work," noun of action from past-participle stem of lucubrare, literally "to work by artificial light," from stem of lucere "to shine," from suffixed (iterative) form of PIE root *leuk- "light, brightness." Related: Lucubrations.
The current story in antiquity was that Aeschylus had been killed near Gela in Sicily by a tortoise dropt on his head by an eagle, which mistook the bald shiny pate of the venerable poet for a stone, and hoped to smash the tortoise on it. See Biographi Graeci, ed. Westermann, p. 120 ; Aelian Nat. Anim. vii. 16 ; Suidas, s.v. Αίσχύλοσ ; Valerius Maximus, ix. 12. Ext. 2. This important topic has produced the usual crop of learned dissertations. The late Professor F. G. Welcker gravely discussed it by the help of ornithological information derived from Aesop's fables, notes of travel made by the professor himself on the supposed scene of the catastrophe, and statistics as to the number of bald-headed men in antiquity. The interesting inquiry has since been prosecuted by other scholars with equal judgment and learning. The reader who desires to peruse these ponderous lucubrations should consult Rheinisches Museum, N.F. 7 (1850), pp. 139-144, 285 sq ; id., 9 (1854), pp. 148-155, 160* ; id., 37 (1882), pp. 308-312 ; Fleckeisen's Jahrbücher, 26 (1880), pp. 22-24 ; Welcker, Antike Denkmäler, 2. pp. 337-346. [J.G. Frazer, notes to Pausanias's "Description of Greece," 1898]