look up any word, like cleveland steamer:
 
22.
A joint (or blunt) that starts skinny at the mouthpiece, and gets fatter towards the end where you spark it.
Guy 1: "Yo u wanna go twist up a cannon?"
Guy 2: "WORD!"
by SMELLZlikeKUSH December 28, 2010
 
1.
meaning that it is 'of the story' or something that could/did ACTUALLY happen in a story, used by fans and fanfictioners
Izzi: Gosh, Marrie, you really like the Harry and Ginny pairing for Harry Potter...
Marrie: Yeah, but it's totally cannon.
Izzi: I know, I read the seventh book

Jen: OMG! McGee and Abby are such a cute couple.
Dan: And it's cannon, have you seen the latest NCIS episode?
Jen: I know, Abby totally kissed McGee's head!!
by Guy McCracken April 27, 2009
 
2.
In Philadelphia this term is used to describe a violent or reckless person.
That youngan is a cannon.
by Lbs. December 23, 2006
 
3.
An ambiguous object. Possibly:

a) a cigar because one end burns like the fuse on a cannon
b) a blunt (cigar filled with weed) because after you smoke it you're head is going to explode.
c) any form of firework
d) a penis, cause after you suck it, it explodes in your face
e) a person, because they could blow you to bits in some way (pwn you)
f) the muscles (usually arm) of a person, because cannons are just bigger guns
g) a firearm, preferablly the one you use to kill the person using this ambigous word in front of you. Don't use this word, people will have no clue what you're talking about.
"What did you just say? Cannon?"
by K` October 15, 2005
 
4.
1. A blunt (see blunt, L, philly, dutch, etc.) that is large in diameter. A blunt containing 3 or more grams of marijuana can safely be considered a cannon.
roll a cannon
spark the cannon
that cannon killed me man
by sherLocke October 24, 2005
 
5.
1. (n.) The future Philadelphia Flyers captain who blasts anyone in his way, via bruising body checks, fists of fury, or delivers blazing shots and sick nasty deke moves.

2. (v.) To violently blast someone in hockey, possibly breaking their face with sheer awesomeness.

3. (adj.) The quality of awesomeness, all-being, and unstoppable power, drive and determination that will stop at nothing to win and destroy the enemy.
Richards is Cannon, and the Philadelphia Flyers are Goon Squad Central. They will cannon fools in the face this year.
by Molten Funk December 14, 2007
 
6.
a firearm, usually a pistol
He took a hard blow to the face before he could draw his cannon.
by Light Joker November 01, 2005
 
7.
Another word for boobs, tits, rack, breasts, etc...
She had huge cannons!
by Kaayin December 09, 2004