It’s April 20, or as many marijuana enthusiasts know it well, 4/20. Today, especially when the clocks strike 4:20pm, many people will light a joint or smoke a bowl in celebration of the herb. Contrary to all the myths about police codes, the number 420 is variously used to refer to marijuana thanks to a group of Bay Area high-schoolers who would meet at a campus statue after school at 4:20pm to get high and hunt for a secret patch where marijuana plants were growing. The time later went on to become a codeword for marijuana or getting high itself.
That’s the origin of 420. But what about the origins of the day’s honoree, marijuana, and some of its many related terms? I think this calls for a hit of etymology.