There is a scene in the movie Michael Clayton where after Michael and a cop discuss a murder the cop makes small talk by mentioning Michael's brother, who is in some sort of trouble.
Cop: I know your brother a little. My wife works the one-nine-O out in Queens.
Michael Clayton: I'll tell him hello.
Cop: If something comes in, I'll get back to you.
I can't find anything online about this term. It is uttered in three separate words in the movie: one nine o. What does it mean?