In the 60's thru 80's "dope" usually meant marijuana. See the famous quote from the Fabulous Furry Freak Brothers ("Dope will get you through times of no money better than money will get you through times of no dope!"). For a time, "dope" became a more generic term, often used for heroin (which used to be called "smack" or "junk"). "Weed" is now usually preferred for marijuana.

These days, dope is most often used to refer to heroin, though it can refer to any drug that's common in a community.
"Man, you know where I can get some dope?"

"Dope? When did you start shooting up?"

"Oh, alright, smartass, WEED! After 30 years, old habits die hard! Can you hook me up, or not?"
by Gzikwiz January 13, 2009

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Most places heroin is dope, some places meth and coke are considered dope, but in Canada, we consider weed dope, since we're all about that Green up in the Great White North
Quote from the Trailer Park Boys:

Julian: Ricky, I'm telling you, you gotta stop growing dope.

Ricky: Come on, man, you can't tell me to do that.

Julian: I'm serious Ricky.

Ricky: You can't tell me to do that. It's like telling the NWA to stop being black.
by YourNorthernBuddy,eh? January 05, 2012

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Dope was a word for sauce (doop), gravy about 200 years ago. About 100 years ago dope referred to a sauce like version of opium. Drugged up horses were beginning to be referred to as being doped.

Dope also can mean an oil or lubricant, or a varnish that is painted on the fabric covering an aircraft. Pipe dope is a sealant used on pipe threads. Dope is used to stabilize liquid explosives.

Modern usage comes from the widespread use of model airplane glue, which was to be applied only in well-ventilated areas. Breathing the fumes made people "dopey," acting stupid, foolish, and clumsy. The term “dope,” is generally used today to refer to anything that gets people “high,” either pharmaceuticals or the evening news.

Dopers, may appear stupefied, confused, muddled, befuddled, disorientated, groggy, or muzzy.
The only hope is dope. ~ Timothy Leary

The '60s are gone, dope will never be as cheap, sex never as free, and the rock and roll never as great. ~ Abbie Hoffman

Dove said “What Dope?”

Q: How do you plant dope?
A: Bury a blond.

Dope will get you through times of no money better than money will get you through times of no dope. ~ Gilbert Shelton
by SuraScent July 24, 2009

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To add small amounts of impurities to a material in order to change the electrical characteristics of the material.
This piece of Silicon has been doped with Arsenic.
by Ragnar January 23, 2005

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an exclamation used when something is extremely cool or exciting.
Man, that ferrari is dope!
That ride was dope!
by madd-dogggg August 27, 2007

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Unlike in America where its a good word... in Ireland a dope is someone who is very stupid - an eejit in other words. It never ever means good unless your a D4 wannabe(they think there posh *roysh*). And you dont really wanna be one of them dopes. Haaaa. Basically anyone who is thick is a dope especially if what they do or say is funny for you but not for them. And in Ireland dope it is NEVER used in reference to drugs - heroin is 'gear' and weed is 'green'. If you asked someone for dope they would look at ye sideways and laugh and ask if you thought you were American...
"Hes the biggest dope in Drogheda"

"Dont be a dick, ye dope!"

"Sure what would that dope know shes as thick as a brick!"

"those Dundalk heads are the dopes of the century"
by AshnAndrew October 25, 2009

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An adjective describing something awesome and chill. Most commonly referring to music.
Did you hear that new Kid Cudi song?

Yea that song is so dope!
by Paige and Doug for President April 06, 2015

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