Graystone College noun phrase slang
Graybar hotel is an older word with the same meaning.
Prison or jail
You'll end up at Graystone College one day, if you don't stop your illegal actions.
Those terrorists escaped from the Graystone College.
He has been out of Graystone College for three years now.
He was sentenced to life in Graystone College for his crime.
To punish someone or something harshly
This idiom is often used to express that you should accept an unpleasant situation or event because you cannot change it.
Once something has been done, you can do nothing but face the consequences.
The word "Greystone" is popular in British English while "Graystone" is primarily heard in the US.
This slang was first recorded in Criminal Slang p.106 written by Vincent J. Monteleone, 1949.