What does "Matchbox" mean?
Definition: A matchbox is a unit of measurement used when selling marijuana on the black market. The term was popularized in the 1940s, though still sees use today. It refers to the amount of weed that can be stuffed into a matchbox, which is usually about 1/4 of an ounce.
Example usage for Matchbox
"I asked the budtender how much a matchbox cost and she just gave me one of their free little books of matches. I guess I must be too old to buy weed, now."