"To sleep in the oubliette, one may suppose.
"The Last Hope"
Henry Seton Merriman
Sometimes the bed sank into the oubliette; sometimes the floor gave way and cast the victim into the oubliette; sometimes the whole room sank slowly into the oubliette; but death for the victim always lurked in the pit.
"Philo Gubb Correspondence-School Detective"
Ellis Parker Butler