Definition of "marijuana"

You could smell tea, weed, I mean marijuana, floating in the air, together with the chili beans and beer.

1957, Jack Kerouac, chapter 13, in On the Road, Viking Press, part 1

Exactly. Marijuana is something we just all gradually decided is okay, like Mark Wahlberg as a serious actor. “You know what? Sure, I’ve decided I’m fine with that.”

2017 April 2, “Marijuana”, in Last Week Tonight with John Oliver, season 4, episode 7, John Oliver (actor), via HBO