black hole

US /ˈblæk hoʊl/
UK /ˈblæk hoʊl/
"black hole" picture
1.

a region of spacetime where gravity is so strong that nothing—no particles or even electromagnetic radiation such as light—can escape from it

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Scientists are studying the supermassive black hole at the center of our galaxy.
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The event horizon is the boundary of a black hole.
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gravitational singularity
2.

a place or situation in which people, money, or things disappear or are lost without trace

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The department's budget became a black hole, with funds constantly disappearing.
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Sending money to that project is like throwing it into a black hole.
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money pitabyssvortex
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holeblackblacknessin the blackrabbit holehole-in-the-walldonut hole