Master-at-arms

Full definition of master-at-arms

Noun

1. (UK, Navy) A warrant officer or chief petty officer responsible for discipline aboard a naval ship.
• Joyce Ulysses Episode 12, The CyclopsThen he was telling us the master at arms comes along with a long cane and he draws out and he flogs the bloody backside off of the poor lad till he yells meila murder.
2. (UK, Army) A commissioned officer responsible for overseeing all fitness training in subordinate units.
3. (US, Navy) A petty officer responsible for law enforcement, antiterrorism, force protection, and expeditionary warfare.
4. An officer in a fraternal or similar organization charged with maintaining order.