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."

by IceWarm June 18, 2004

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.

by AwkOS V2*72 October 27, 2010

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.

by foxhidden May 19, 2006

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

by RedundantShaq May 28, 2018

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

by Royal_Belvedere March 25, 2010

PI

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

!: What's his PI?
@: 2.3.4.5

by alecs July 19, 2006

pi

Pi is an irrational number (meaning the digits never end or have a repeating pattern) that is the ratio of the circumference of a circle to its diameter...this ratio is a constant for any circle, regardless of size.

The first 100 digits for pi is equal to 3.1415926535 8979323846 2643383279 5028841971 6939937510 5820974944 5923078164 0628620899 8628034825 3421170679 ...

by PY Love and Peace June 06, 2013