40s 

a alcholic drink that gangstaz like to drink...40 ounces

yo wut up LOC lets drink dez 40s..cuzz "C'z" up

40s by TOm-LoCc February 26, 2005

40s 

A Chicago Dance that looks like your riding on a horse.

Dude doing the 40s
Do the 40s
He was footworking and then he did the 40s

40s by JUKE WALK December 9, 2006

40s and 9s 

Where you can buy 40oz st. dies and 9mm ammo. Like a 7 and 11 convenient store. Used in "Don't Be A Menace To South Central" movie.

40s and 9s, my favorite convenient store!

40s and 9s by samiam6977 October 16, 2011

twin glock .40s

Ludacris' choice of arms, usually cocked back.

I've got twin glock .40s cocked back.

twin glock .40s by southpaw23 May 18, 2016

Jonny 40s 

When Jonny gets a 40s.

“Ahhh it’s finally Friday night , wonder if Jonny 40s is about”

Jonny 40s by Clonkobum January 30, 2024

7-Tel Rollin’ 40s Neighborhood Crips 

Detroit branch of the LA Rollin’ 40s, mostly around Grand River & Telegraph to 6 Mile (“Parcside Zone”). Allied with Rollin’ 60s, 113 OBC, and Rollin’ 100s; rivals with 5Point Nation, Hyena Crips, 107 Hoovers, and Black P. Stones.

“Graffiti along Grand River shows the 7-Tel Rollin’ 40s Neighborhood Crips claiming their Parcside Zone turf while keeping tabs on 5PN tags.”—Redford local

7-Tel Rollin’ 40s Neighborhood Crips by RealTalkOnlyFool October 10, 2025

.40 S&W 

A handgun cartridge that is very popular for self-defense and is increasingly being used in police service pistols. Smith and Wesson developed the .40 S&W round off of the 10mm round in order to fill a large gap in stopping power between the 9mm and a .45 ACP. Unlike other rounds, .40 S&W bullets feature a flat tip as opposed to a smooth conical tip as seen in a 9mm. The bullets were designed this way so more surface contact will be made with the bullet's target. The .40 travels at very high velocities, giving the shooter quite a bit of recoil when the gun is fired. However, this additional velocity makes the bullet ideal for shooting through light cover such as car doors or windshields.

Data compiled from police shooting incidents put the .40 S&W at a 96% chance of stopping an attacker with one shot, proving it's value as a formidable defense cartridge. Cheaper than .45 ACP rounds, yet just as effective in getting the job done, the .40 S&W has seen great commercial success.

Guns chambered in .40 S&W are an excellent choice for self-defense.

.40 S&W by Ghost Dog August 3, 2007