look up any word, like the eiffel tower:
 
1.
To Jump Or Gang Bang a Person. To Beat Someone Down With Your Friends
A look!! that niggas catching a rat pack.
by Dia2008 February 10, 2007
 
2.
Collective name of several top entertainers who were known to pal around, and party, during the 1950s and 1960s. The recognized leader was singer/actor Frank Sinatra, and the group (Famous for its Vegas shows, done while filming Ocean's Eleven) consisted of other top talents, Dean Martin, Sammy Davis Jr., actor Peter Lawford, and Comedian Joey Bishop.
The Rat Pack helped in raising funds for JFKs election.
by Kwydjebo September 16, 2004
 
3.
1. Legendary Hollywood group of the '50s, noted for what then passed for glamorous decadence.

2. Any group prone to pally misbehavior.
Dean Martin and Sammy Davis Jr. were members of the Rat Pack
by octopod July 10, 2004
 
4.
Group of friends also known as hoodrats
Here comes that nasty hoodrat Rose and her rat pack
by claudia salinas October 07, 2011
 
5.
Verb: To simultaneously ejaculate, vomit, sneeze, shit, piss, bleed, and weep on your sexual partner.
Carla, I'm sorry that I killed your sex drive when I Ratpacked you in Atlantic City.
by Todd Day August 02, 2011
 
6.
An established pack of rats that will billgerently reject an outsider who try's to join them.
Real "G's" rat pack
My boyz and I rat-pack to keep sucka azz bitchez out of our inner circle.
by ••ChAoTiC•• April 11, 2009
 
7.
Someone who is less than a second class citizen, less than a degenerate. Someone who flakes on any event.
Ricky that Rat Pack bastard.
by Dan Sanders January 23, 2011