a place in which things are lost never to be seen again
a prison or place of confinement. Often related to “the black hole of Calcutta”
in commerce it is used to describe an organization into which large quantities of money is poured but no profit is shown
a sphere of influence from which things like communication are not forthcoming
My handbag is a black hole. You can try and find the keys in there but I can’t promise anything.
My memory is a black hole. I have to write everything important down.
After the prisoner stabbed a guard he was sent to solitary confinement. It is called the black hole.
The National Airline has become a massive black hole in the economy.
The new division of the company has become a financial black hole.
The new administration has become a black hole.
There is no origin for this idiom
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definition
Common phrase that has a specific meaning.