French, oublier: "to forget" or "to loose". Also a medieval torture device. Look it up at your own risk.

Its like a solitary confinement torture dungeon, but worse. Its a narrow pit below the dungeon where they toss people who are condemned to death. Too narrow to sit or lie down, even if your legs got broken when or before you were thrown in. All sorts of shit piss gore and blood get tossed in too. Probably other harmful junk like live rats and broken glass. There is no return, and they dont clear out the previous tenant or remnants thereof before the next one is moved in.

Ask Hoggle. Labyrinth’s full of ‘em.