five-o 

n. Short for police officers. Originated from the TV show Hawaii 5-0 which was a copp show in the 1970's. Hawaii is the 50th state, hence the nickname "5-0".

Put that blunt out, five-o, five-o!

five-o by thug4life September 29, 2002

five-o 

Urban slang for police officers. Derived from the police drama "Hawaii 5-0."

Five-O is following us, and we've got six bags of crack in the trunk. Damn, we're doomed.

five-o by GuidoPosse69 February 8, 2005

Five-O 

A term used for police. Usually when the person is doing something wrong or illegal.

police pigs

Shit! Run! The Five-O are coming! Hide the drugs!

Five-O by Ziggy Bop March 7, 2008

five-o 

a nickname for police

Shit five-o finna show up and shut our car meet down.

Run fast motherfucker it's the five-o

Someone phoned/called the five-o on us.

five-o by Agerix December 29, 2016

Five-o 

Pigs -- sometimes hair-trigger killers with screamin' amps, party lights and big guns (the bad kind of each) anywhere, but specifically on any of the Hawaiian Islands.

Generally: anyone, anywhere packin' a badge or talkin' to someone who does; Cops; LVPD on bicycles; LAPD; NYPD; Sheriff's Deputy; CHiPs; Highway Patrol; State Police; Texas Ranger; feds; U.S. Marshall; DEA; BATF; undercover detective; the man; gubbamint agent; revenuer; Dog the Bounty Hunter; Officer of the Court; DA, judge; meter maid; security guard; narc; snitch; CI.

Even more broadly: paranoid label for anyone out-of-place in the hood; a person (potential witness) suspected of surveillance; someone who trades their legal troubles for incriminating testimony against someone else.

"This is McGarrett, FIVE-O. You're dusted (busted).
Book'em Dan-O (or Book him, Danno)."

"The Feds are bastards. Even Captain Steve McGarrett of Five-O don't like 'em for their inept and abusive heavy-handed tactics."

Five-o by Cholito (no hate) Hellamongo is Love October 18, 2006

five-o 

although it does come from hawaii 5-0, my undestanding is that it specified undercover officers, or detectives

Yo, you think he's five-o? wait til he leaves before you light that shit.

five-o by swervon 617 November 11, 2007

Five-O 

Meaning Police
Originated from New York

Mr Cahill, you like a God to me.
Like a god. Son I am God. God, Allah, Buddha all rolled up into one big Nigga.

Five-O.
Motherfucker got more shit on me, put me away for 20 or 30 years. That's why I gotta pay them so much money.

Five-O by Bally June 23, 2006