- An area of space-time with a gravitational field so intense that its escape velocity is equal to or exceeds the speed of light. (noun)
- A great void; an abyss: The government created a bureaucratic black hole that swallows up individual initiative. (noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.