What does "hall monitor" mean?

A person responsible for maintaining order in a school's corridors and halls.

What is a synonym for "hall monitor"?

Common synonyms include: monitor, order-preserving official, police officer.

noun

noun ·Rare ·Advanced level

Noun

1
A person responsible for maintaining order in a school's corridors and halls. US
2
A person who shows or demands deference to authority. broadly, derogatory
"(When I got to this part of the podcast, I have to admit, my own inner hall monitor was on high alert.)"

"(When I got to this part of the podcast, I have to admit, my own inner hall monitor was on high alert.)"