420
Americannoun
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marijuana.
Are you carrying any 420 on you?
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marijuana drug use: The guys at the party were all 420-friendly.
Police presence at the concert discouraged 420.
The guys at the party were all 420-friendly.
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the twentieth day of the fourth month, or the time 4:20, when referenced as a day or time for cannabis consumption or the celebration of marijuana culture.
The head shop has a big pipe sale every year on 420.
Usage
What is 420? 420 is a slang term (or a kind of code word) referring to marijuana or marijuana use. Due to this association, 420 is also used as the name of an unofficial holiday that marijuana enthusiasts celebrate by using marijuana. It is sometimes called Weed Day (weed is a slang term for marijuana).
Etymology
Origin of 420
First recorded in 1970–75; a code word derived from the meeting time of a particular group of marijuana smokers in 1971, later popularized by fans of the band the Grateful Dead
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
There are 420 memorials at the 150-acre site, which honours the service and sacrifice of the armed forces, emergency services and other civilian organisations, including the Sands charity's baby loss memorial.
From BBC ● Sep. 3, 2026
The local Veterans of Foreign Wars post has about 420 members who swap tips on visas and local health insurance.
From The Wall Street Journal ● Sep. 1, 2026
Together, these 420 chemical reactions form the metabolic network known as metabolism.
From Science Daily ● Aug. 12, 2026
My purpose is to put a name to the joy I felt last week, testing the Lotus Emira 420 Sport at the company’s test track in the East Anglia region of England.
From The Wall Street Journal ● Jul. 25, 2026
Each one stood 420 feet tall, the equivalent of a thirty-story skyscraper, and had three whirring blades.
From "Killers of the Flower Moon" by David Grann
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
