Use "oubliette" in a sentence

1. But I felt stone at my back, and looking up, saw it was an oubliette

2. We knew Dominique’s death happened in 1544 and date calculation placed Nicole at 16 when she was in the oubliette, almost two years after her mother’s death

3. But fifteen minutes later, watching the driver unload his typewriter in the oily gloom of the bus-station subbasement, Mercer would be squeezing the moment back into some inner oubliette

4. In the very lowest Dungeon, chain’d piteously in a sort of Oubliette in which he could not stand, his Legs in heaviest Irons, his Body clad in the filthiest of Rags, sat our Lancelot, his beauteous Form doubl’d o’er as in Pain