tristate
The New York Metropolitan area: New York, New Jersey and Connecticut.
We move work through that tristate.
the tristate area
the Chicago Metropolitan Area. Includes Northeastern Illinois, Northwestern Indiana, and Southeastern Wisconsin
Dang! It's so expensive to drive on teh Tri-State Tollway
tristate area
the three part on a woman's body (boobs and private areas)which the boy friend/husband get once they do it
Your girl friend has a fine tristate area