look up any word, like timebomb:
 
1.
A term bloggers use to refer to President Bill Clinton.
"Big Dog still has mucho mojo in political circles."
by Genaro Lopez January 17, 2004
 
2.
One at the top of his game.
Be it Business Man, Doctor, Drug Dealer, Pimp etc.
"Yo, dat be tha 'Big Dog' yo' fuckin' with, betta ReCoGnIsE!!!"
by Diego September 04, 2003
 
3.
A term used to describe a friend, colleague, or person. Can be used in the place of Words such as Man, Bro, Dude, etc.
Come on, Big Dog.
When are we gonna go to another Red's Game, Big Dog?
by xx QuikShoT March 03, 2010
 
4.
to replace a guys name,
what you call a person whos name you forgot, a friend, a homebro, a co-worker, an acquaintance, a stranger
Nice to meet you BIGDOG.
Hey BIGDOG, can i bum a cigarette?

dring a beer like a BIGDOG can,
if you can't drink a beer like a BIGDOG can?
you shouldn't have the beer in your mother fucken hand!

by AlbeatU September 10, 2006
 
5.
One man who think he's better than everyone else, continously gets ripped on by his homedogs, usually found wearing no shirt
Wow he's driving with no shirt on, he must be a big dog.
by 420 SHNAYZE May 18, 2010
 
6.
n. Descriptive term for an important person. Term to describe an extremely large and unnecesary vehicle, such as a Ford Expedition.
I rented the big dog, so I can get all pimp with the fat ladies tonight, and still have room for my homies.
by DrewZee May 09, 2003
 
7.
An OxyContin 80 mg pill, whereas a Little Dog is a 40 mg pill.
I need a Big dog, or a Great Dane, how much is a pure bred? or for a little dog, I need a Schnauzer, are there any around?
by Simmons62 December 31, 2005