(US, military, slang) Somebody who has spent time in the brig; an offender in the military.

plural of brig rat

(derogatory) A person who refuses to take preventative measures during a disease outbreak

Providing a good habitat for rats.

plural of rat dog

A dog trained to hunt out rats.

(military, slang) An air base employee who is not a pilot.

plural of hangar rat

plural of rat-licker

That shuts forcibly or holds tight, like a rat trap. / Of the mouth, resembling a rat trap; large and ugly.