black hole Definition in the Cambridge English Dictionary
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Definition of “black hole” - English Dictionary

Definition of "black hole" - American English Dictionary

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black holenoun [C]

 us   /ˈblæk ˈhoʊl/
physics a ​region in ​space where the ​force of gravity is so ​strong that nothing, not ​evenlight, can ​escape from it
(Definition of black hole from the Cambridge Academic Content Dictionary © Cambridge University Press)

Definition of "black hole" - British English Dictionary

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black holenoun [C]

uk   us  
specialized physics a ​region in ​space where gravity is so ​strong that nothing, not ​evenlight, can ​escape an ​imaginaryplace in which things are ​lost
(Definition of black hole from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)

Definition of "black hole" - Business English Dictionary

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black holenoun [C]

uk   us  
COMMERCE an ​activity or ​organization on which very large ​amounts of ​money are ​spent but which does not ​produce any ​profit or useful ​result: Fears that the ​operation would be a ​blackhole proved well-founded.
FINANCE, ACCOUNTING a large ​amount of ​money that is ​owed by a ​company or ​government: black hole in sth Taxes will have to ​rise to ​fill a ​blackhole in the ​publicfinances.
(Definition of black hole from the Cambridge Business English Dictionary © Cambridge University Press)
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