PI

Abbreviation for private investigator. Often hired by people to get information of somebody else's activities or to solve crimes that the police for one reason or another won't investigate themselves.

"I had to hire a PI to find out who killed my friend."

PI

Private Investigator. Also known as "Private Eye" (Not to be confused with Private Eye Magazine. Frequently hired by tabloids to do illegal phone-tapping operations and suchlike.

Damnit, some PI has been snooping on my phone lines. I bet they're from the News of the World.

PI

abbreviation for "Prison industries" The prison-run work program for inmates. A very popular word now you can hear in "Prison break", a Fox TV show

Scofield and his whole P.I. crew, They're escaping.

PI

Phone Interceptor.

A person who is outside the phone conversation but constantly intercepts by commenting and asking questions in the background.

A constant phone spy. Like the number PI, they keep going and never stop.

IE: girlfriends, sisters and parents

Don't be such a PI. Wait until I get off the phone to fill you in on what's going on.

Can't talk now. I got a PI on my back.

PI

A pompous little prick that actually knows all and is not ashamed to show it. Variations : asshole dick

My boss is such a PI

PI

Slang for the word 'pillage' which means to kill or destroy, usually said toward a person. Used when a large group of person beat the shit out of someone.

Pronunciation: PI - 'Pee' and 'I'

-Yo! This guy is so getting PI'ed!
-Why?
-He insulted me and all my friends

PI

Computer code which every computer can be identified. Hackers need to know.

!: What's his PI?
@: 2.3.4.5