AVERNUS, n. The lake by which the ancients entered the infernal
regions. The fact that access to the infernal regions was obtained by
a lake is believed by the learned Marcus Ansello Scrutator to have
suggested the Christian rite of baptism by immersion. This, however,
has been shown by Lactantius to be an error.
_Facilis descensus Averni,_
The poet remarks; and the sense
Of it is that when down-hill I turn I
Will get more of punches than pence.
Jehal Dai Lupe
-- Ambrose Bierce, "The Devil's Dictionary"