The term 420 friendly is used to describe places that offer business to cannabis users or help users locate one another. In states where the use of cannabis is legal, establishments may choose to identify as accepting of users.
There are various suggestions as to the origin of the use of 420 (pronounced four-twenty) in relation to cannabis consumption. However, in the United States, April 20 has been identified as a day to celebrate the use of cannabis. While, as of July 2014, its use is still illegal under federal law, a number of states have passed legislation regarding use for medical purposes. The term 420 friendly is often used by cannabis users to locate others, such as for roommates, or to locate a business, such as a hotel that rents to people who use cannabis.