http://www.whitehousedrugpolicy.gov/streetterms/ByType.asp?intTypeID=1
Al Green
B
Bammer
Black
Blaze
Blowhead
Blunt -- a marijuana cigar; named for the Philly Blunt
Bomb -- high potency marijuana
Boom
Bowgma-Chuff
Bud -- the buds of the cannabis plant
Buddha
Bush
Cann
Cheeba
Chrin
Chronic or Chron -- hip-hop slang terms
Collie Weed -- Jamaican terminology
Creeper Weed -- marijuana that has a high that comes on slowly
Crippy
Daddy
Daniel is not my name
Dank -- potent marijuana
Dark -- marijuana that is darker than normal
Dirt -- cheap marijuana which is usually not very potent; sometimes called Dirt-Weed (also see Schwag)
Dirty Dank
Doob or Doobie -- a spliff
Dope -- sometimes a generic term for illegal drugs
Doshia (sometimes spelled Dolja)
Draw
Fire -- very potent marijuana
Flack Juice
Fruit
Funk
Ganj -- a shortened variant of Ganja
Ganja -- a Caribbean English term; common in Jamaica
Gerp
Gran
Grass
Green
Hemp
Herb -- from the appearance of dried cannabis, extensively used in Jamaica
Herbalz (sometimes spelled Herbals)
High
High-Grade -- expensive marijuana with a high THC content; often Kind-Bud
Hydro -- short for hydroponics, a method of growing marijuana indoors without using soil
Indo
Ish
K.B. -- short for Kind-Bud (also spelled Kynd-Bud)
Kilroy
Kind-Bud -- a high-grade and usually expensive strain of marijuana; often grown indoors
Kind
Kynd -- a European variant of Kind
L -- a marijuana cigar (see Blunt)
La-lala
Lows -- marijuana that is cheap and not very potent (see Schwag)
M
Marijuana -- perhaps the most common slang term for Cannabis; from Mexican Spanish
Mary
Mary Jane
Methtical
Method
Mid-Grade -- marijuana which is above-average but below high-grade in terms of potency
Middies -- a variant of Mid-Grade (also spelled Middys)
Mint
Mota
Muggles
Nuggets -- resinous Nuggets of cannabis buds
Nuggs -- shortened variant of Nuggets
Nugglets -- comic variant of Nuggs
Old Toby
The Peeping Jesus
Perp
Pot -- from Mexican Spanish Potiguaya, cannabis leaves
Puff
Rasta Plant -- from the Rastafari movement
Relish
Schwag -- average to below-average marijuana which is usually very cheap; schwag is often smuggled in to the USA from Mexico. Many teenagers begin their 'marijuana experience' smoking schwag because it is extremely cheap and very accessible.
Sensemilia -- Spanish sin semilla, "without seeds"; unfertilized female cannabis buds
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Shrubs
Skunk -- a particular cannabis strain; from its distinctive smell
Smoke
Stank -- highly aromatic marijuana
Stash
Sticky
Strees
Stuff
Striijj" -- Pronounced "Streeeege", from slang used in Toronto, Canada.
Tea -- early 20th-century slang
That ****
Tical -- hip-hop slang from the group Wu-Tang Clan
Trees
Tweed
Wacky Tabacky -- from tobacco
Wacky Weed
Weed
Yaa
Yameen