physics - Black hole (disambiguation)

A physics black hole(not a hole, but really a sphere) is an object with sufficient density that the force of gravity prevents anything from escaping from it except through quantum tunneling behavior.
A black hole, in programmer's jargon, is a pipe which feeds into Unix's /dev/null, a place of permanent oblivion for data also known as the bit bucket.
The Black Hole is a science fiction movie.
Black Hole is a comic book by Charles Burns.
Black Hole was a pinball game developed by Gottlieb.
Black Hole is a solitaire game with rules similar to another solitaire game, Golf.
The Black Hole of Calcutta refers to a tragedy that was exaggerated into an atrocity against British forces in 1756.
The Black Hole is a rollercoaster at Alton Towers.
The Black Hole NATO slang for a Russian Kilo class submarine
In social or business conversation, a black hole is any effort which consumes time, energy, or other resources without yielding a useful result.