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1.
the car they take you to jail in. sort of like a paddy wagon.

mostly used in england
You know it means no mercy
They caught him with a gun
No need for the Black Maria
Goodbye to the Brixton sun
by mike October 06, 2004
33 11
 
2.
Glaswegian
The large black police bus that takes neds to the jail from police offices

"Who'sina Black Maria?"
"wee Jimmy, aff tae the Bar-L"
by FossillPark March 04, 2006
18 7