Country Dictionary

A person who demonstrates skills beyond normal mastery, particularly in the field of music.

"Did you hear that guitar solo? That guy's a monster!"

a ruthless unsympathetic,self-centered person

Rodger is a monster the way he treats his girlfriend.

{adjective}: A term used to describe an act or an individual that is badass, hardcore, gnarly, ill, savage, or rad.

"That jump was so monster!"

"Keep it monster, man"

What you become when you break up with a girl.

Man - "We need to talk."
Woman - "You're a monster."

one of the best energy drinks

that monster was good

1) The thing that hides under your bead when you are from ages 4-8, or later if you're weird...
2) A big-ass thing that's in a shitload of really bad horror movies, used to scare people.

Daddy daddy! There's a monster under my bed!!!
Godzilla is a monster

A young female in her teen years (13-19) that portrays an image of innocence but behind closed doors performs nasty sex acts that you would not expect from such a nice young girl. (E.g., Anal sex, Deep throat, Ass to mouth, tea bagging, rim jobs, orgies, DP, etc.)
A monster is similar to a freak. The difference is in the age and how you expect her to act biased on her outside appearance.

-"What's up Joe, how was that date last night with that hot young librarian girl? I bet she was lame."
~"Bro you are not gonna believe it, I thought that she was a geek too but I brought her to dinner and then we went back to my place for a drink and before you know it she was letting me get hot in her ass! Man that girl is a monster!!"