A dungeon or dark cell in a prison; a military lock-up or guardroom; -- now commonly with allusion to the cell (the Black Hole) in a fort at Calcutta, into which 146 English prisoners were thrust by the nabob Suraja Dowla on the night of June 20, 17656, and in which 123 of the prisoners died before morning from lack of air.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). black hole. Retrieved September 24, 2026, from http://smartdefine.org/black_hole/definitions/1980702 |
| Chicago | Webster's. 2011. "black hole" http://smartdefine.org/black_hole/definitions/1980702 (accessed September 24, 2026). |
| Harvard | Webster's 2011, black hole, Smart Define, viewed 24 September, 2026, <http://smartdefine.org/black_hole/definitions/1980702>. |
| MLA | Webster's. "black hole" 27 May 2011. Web. 24 September 2026. <http://smartdefine.org/black_hole/definitions/1980702> |