hall monitor

hall monitor (plural hall monitors)

1. (US) A person responsible for maintaining order in a school's corridors and halls.
2. (by extension, derogatory) A person who shows or demands deference to authority.
   • 2025 March 17, Andrew Marantz, “The Battle for the Bros”, in The New Yorker‎^[1], →ISSN, archived from the original on 17 March 2025:

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