A slang term used to described a Law Enforcement Officer such as a Police Officer or Sheriff's Deputy, etc. Derived in The South from the word "patrol".
Don't look, but there's a trol behind you!
Word we use in the south to describe a Police, or the
patrol unit (trol).
Yo chill, trol right behind us.
Man, fuck 'trol nigga, ima mothafuckin hot boy.