noun
Street Slang
mainline
MAYN-line · noun · slang
The general prison population, or the mass move to chow.
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Definitions
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The main body of inmates in general population; also used for the mass movement of prisoners to the chow hall.
“He couldn't walk a mainline yard, so they kept him on an SNY.”
by community
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mainline In A Sentence
He couldn't walk a mainline yard, so they kept him on an SNY.
Origin & Usage
From the 'main line' of prisoners moving together; California and federal usage.
Variants
main line
People Also Ask
What is mainline in prison?
It refers to the general prison population, and can also mean the mass movement of inmates to the chow hall.
What does it mean to walk a mainline yard?
It means being able to live safely among the general population; inmates who can't may be placed in protective housing like an SNY instead.
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