colluviariumEtymologyFrom New Latin colluviarium, from Latin colluviēs (“filth, dregs”) + -arium.colluviarium means openings for ventilation in Ancient Roman aqueducts. Lexicurio rates it Sui generis — a strength score of 100 out of 100.nounOpenings for ventilation in Ancient Roman aqueducts.“All such expressions can never be elevated into lasting dignity, however closely they may be associated with the genius of a Swift or a Butler (just as low-life may be associated with the genius of Hogarth); nay, though they may have the high sanction of parliamentary authority; and certainly, though not omnipotent, it can produce very extraordinary effects upon the verbal currency of the kingdom;”