1) A handgun.
2) A popsicle brand sold in some parts of the world.
3) A brand of condoms- extra large.
4) A nickname for Japanese singer Gackt who once, when asked about his penis, blurted out he is a "magnum" on national TV.
1) He shot his girlfriend with a magnum.
2) I love double caramel magnums but they're so fattening!
3) He is hung like a horse- he only buys magnum condoms.
5) Is that a crease in Gackt's pants or is he just happy to see us?
by shame_shame_shame August 30, 2005
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The largest condom available for men who pack extra down stairs.
During my Oracle training, Brad's magnum created an enormous bulge for the Oracle team to see.
by Spurlin July 30, 2008
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An incredibly powerful handgun
Ah ah! I know what you're thinking punk. You're thinking 'did he fire six shots or only five?'. Well, to tell you the truth, I forgot myself in all this excitement. But being as this is a .44 Magnum, the most powerful handgun in the world, and can blow your head clean off, you'd better ask yourself a question. Do I feel lucky? Well? Do ya? Punk!

(Loud gunshot)
by Snake July 18, 2004
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A round with a greater amount of propellant than a standard cartrige or the wepon that fires this ammunition. Named after the largest size bottle that champagne is sold in (almost 1/2 gal.)
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The standard way to describe a glass bottle which holds 50.8 fluid ounces of champagne. A regular bottle of champagne holds 25.4 ounces, therefore a magnum contains the same amount as 2 regular bottles.
I was going to get a bottle of champagne but decided to get a magnum of champagne instead because more people are coming than I expected.
by z July 20, 2004
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a nickname that really lame dickwads try to give themselves because they think it makes them sound cool, or they think it fools chicks into thinking that they have a big penis, when in all actuality, they probably have the tiniest choad you've ever seen.
Guy #1: Can you believe Billy wants us to call him Magnum?

Guy #2: What a little choad! That grundle troll is annoying as fuck.

Guy #1: Yeah, I know what you mean. I wonder if he asked his manager at T.G.I.Friday's if he could put "Magnum" on his name tag.
by Edsantry February 09, 2007
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