1. A popular term used to describe a weed smoking time created by the waldos because they always smoked at 4:20. it has spread into a code for smoking and now April 20th has been established as national pot smoking day

2. A number usually found between 419 and 421.

3. A police code for a homicide

4. (April 20th) Hitlers birthday
1. hey man its 420, time to smoke!!!
2. hey man i just counted to 420!!!!
3. -guy gets killed- (cop): WE GOT A 420!!!
4. hey man its the H-mans B-day, lets go heil and celebrate
by SinisterL April 24, 2010
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420 is now known as Pot Smokers Day, but in the early 90s, April 20th was National Smoke Out Day, encouraging people NOT to smoke cigarettes. We all know what "smoke out" means now.
Happy 420!

It's 420. We need some goodie good good.
by ImAWriter May 30, 2008
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you guys are fucking stupid, 420 was originated in southern california by a group called the waldos, 1 of them heard about a patch of weed plants so they decided to go look for it after school at 4:20pm they never found the weed patch but they still got high as shit off the stuff they did have. Today it is national weed smoking day/time and is today, so im still a little high =D
its 4:20 on 420, lets blazeeeee
by Genius Weed Smoka April 20, 2006
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Started by the waldos. Today. It was the day where you get high. In about 2 hours I will be high. Because at school I can't smoke
420. we're gettin stooooooned!
by RileyK April 20, 2005
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The 20th day of April, or National Potsmoking Day in the US. Who cares where the number 420 originated, just go out and some some pot for pot's sake.
Pothead#1: "What are you doing on 420?"
Pothead#2: "I'm going to smoke weed all day!"
by Zen Master April 24, 2005
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to add to the "waldo" deffinition....4/20, is also considered "National Pot Day, 4/20 being April 20th" and alot of people wait till 4:20 on 420 to get high
heyy, are yyou in on 420?
hell yyea....who isnt?
by deadea August 29, 2007
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a small boat used to sail that is moderately fast but takes a few mintes to rig and derig. Can be used in varsity races and beginners sailing.
hey you wanna race yur laser against my 420?
by souljafortune October 23, 2008
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