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.
Early trading suggests a 58 point gain for the S&P 500, with the Dow Jones Industrial Average priced for a 420 point advance and the tech-focused Nasdaq looking at a 260 point bump.
From Barron's • Mar. 25, 2026
After that, stocks dropped to 420 in late October, followed by a rally that smashed through 600 for the first time in 1959 and quickly rallied toward 700.
From The Wall Street Journal • Mar. 7, 2026
Demand for gold was the biggest ever for a fourth quarter, reaching 1.303 tons, boosted by ETF inflows and a 12-year high for bar- and coin-buying of 420 tons — a 30% annual gain.
From MarketWatch • Jan. 29, 2026
Moeen, a two-time World Cup winner, joins the White Rose as one of England's most accomplished white-ball cricketers, scoring 7,792 runs and taking 271 wickets in 420 T20 matches.
From BBC • Jan. 28, 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.
