noun, feminine/sɑ̃.tʁuz/plural: centrouses
a prison for inmates with long-term sentences
“...j'ai été pigé et sapé à cinq berges de centrouse, malade pendant une longe, j'ai fait la cavale.” — ...I was caught & sentenced to five years in the big house, [I was] sick for a year, I ran away.
From French centrale with the slang suffix -ouse.