Findings:

• Dictionary of Mountain Bike Slang
• The Dictionary of American Slang
• A Dictionary of Slang and Unconventional English
• Cassells (user)
• The New Hacker's Dictionary
• The Hacker's Dictionary
• dictionary
• The Devil's Dictionary
• Slashdot using Everything as a Dictionary
• Webster's Dictionary
• The Official Scrabble Players Dictionary
• The Dictionary of Cultural Literacy
• T-9 Dictionary
• American Underworld Dictionary
• E2 Dictionary and Reference Works
• Fake words and broken definitions in dictionaries
• Merriam-Webster's New International Dictionary, Second Edition
• Dictionary Attack
• abridged dictionary
• Hot Truck
• Black's Law Dictionary
• dictionary flame
• Tonkin's First Computer Dictionary
• Dictionary of Angels
• Did you know that the word 'gullible' isn't in the dictionary?
• Oxford English Dictionary
• Macquarie Dictionary
• The Dictionary of Imaginary Places
• dream dictionary
• The Dictionary of Dictionaries
• The New Hackers Dictionary
• Excerpts from the US Dept of Labor's Dictionary of Occupational Titles
• Using a Kanji Dictionary
• Mathews' Chinese-English Dictionary
• Dictionary of Sexology
• Hacker's Dictionary
• Merriam-Webster's Third New International Dictionary
• The Oxford Dictionary of Quotations
• Neal Stephenson's Big Dictionary
• Orange Rhyming Dictionary
• The dictionary game
• Dark One's Dictionary
• rhyming dictionary
• American Heritage Dictionary
• Dictionary of Received Ideas
• The Endangered English Dictionary
• Canadian Gage Dictionary
• Dictionary of Classical Mythology
• Dictionary of Biblical People
• English Dictionary
• The Dictionary of the Khazars
• Dictionaries prove nothing
• The Highly Selective Dictionary for the Extraordinarily Literate
• The Plan of an English Dictionary
• The Plan of an English Dictionary - part 2
• Copying from the dictionary
• Dictionary Golf
• Walker's Rhyming Dictionary
• The Microsoft-English Dictionary
• The Microsoft-English Dictionary: Legal, Marketing, and Internet Community Terms
• The Microsoft-English Dictionary: Security-Oriented Terms
• 1811 Dictionary of the Vulgar Tongue
• The Pinball Dictionary
• The Dictionary of National Biography
• Dictionary of schoolyard handball terms
• The danger of bilingual dictionaries
• Dictionary of recently extinct animals
• Collaborative International Dictionary of English
• Encarta World English Dictionary
• Probability Theory / Functional Analysis Dictionary
• reverse dictionary
• Smith's Dictionary of Greek and Roman Biography and Mythology
• Middle English Dictionary
• I lent you my favorite dictionary. It came back with ripped out pages.
• Dictionary of American Regional English
• Dictionary of Languages
• Oxford Latin Dictionary
• Chicago Assyrian Dictionary
• Random House Webster's Unabridged Dictionary
• Merriam-Webster's Dictionary of Synonyms
• Acronyms, Initialisms, and Abbreviations Dictionary
• Dictionary of Noted Names in Fiction
• Chinese dictionary
• Irish Dictionary Online
• 1811 Dictionary of the Vulgar Tongue: A
• 1811 Dictionary of the Vulgar Tongue: B
• The Super Dictionary
• 1811 Dictionary of the Vulgar Tongue: C
• New Dictionary of National Biography
• Oxford Dictionary of National Biography
• English-Russian Dictionary
• Dictionary of sexology: Main Index (node_forward)
• American Underworld Dictionary 1950 (e2poll)
• dictionary (user)
• Empty Dictionaries
• The Webster1913 Dictionary on Everything2
• Concise Oxford English Dictionary
• Major dictionaries of the world
• Dwelly's Illustrated Gaelic to English Dictionary
• In the end it took me a dictionary, to find out the meaning of unrequited...
• Dictionary of recently formerly animals
• Dictionary of formerly extinct animals
• Bad Dictionary
• For a dictionary falling apart slowly
• A Dictionary of Untranslatable Words
• Pandeism and the Oxford English Dictionary
• The Dictionary of Disgusting Facts
• Slang
• S-Lang
• Hip Tea Pad Slang
• Cockney rhyming slang
• Rhyming slang
• 1920s slang
• Family slang
• Japanese Slang
• Japanese Ranting Slang
• Soundalike Slang
• drug slang
• Canadian Slang
• Arabic slang
• Drum Slang
• London Slang Project
• Old Southern Slang
• French slang
• Illinois Prison Slang
• Invented slang terms in Benjamin Peret's Death to the Pigs and the Field of Battle
• Medical slang
• Euchre slang
• Poker terms
• English slang terms for monetary units
• German slang
• German Slang: A
• German Slang: B
• German Slang: C-F
• German Slang: G-H
• German Slang: I-K
• German Slang: L-O
• German Slang: P-R
• German Slang: S
• German Slang: T
• German Slang: U-Z
• The grunge slang hoax
• Royal Navy slang
• Shadowrun Slang
• Cork city slang
• Nepali Slang
• Swahili Slang
• Slang names for places in the New York metro area
• Israeli slang
• New Slang
• Finnish newspaper slang
• Trucker slang
• Spanish slang
• Cambridge University Slang
• Hamburg Slang
• Slang names for places in the Boston metro area
• Peruvian slang
• Russian slang and colloquialisms
• Burton High School Slang
• World of Warcraft Slang
• World of Warcraft Slang: Trade
• World of Warcraft Slang: Places and Travel
• World of Warcraft Slang: Grouping
• World of Warcraft Slang: Battle
• World of Warcraft Slang: Interfaction
• World of Warcraft Slang: Equipment
• World of Warcraft Slang: Other Terms
• World of Warcraft Slang: Characters
• World of Warcraft Slang: Exercises
• Australian slang
• Chemistry Slang
• Lexical categories and sexual slang
• Cockney Rhyming Slang (category)

If you Log in you could create a "Cassell's dictionary of slang" node. If you don't already have an account, you can register here.