PolishDictionary.com

The Online Slang Dictionary
A global dictionary of English slang.
www.ocf.berkeley.edu/

The Dictionary of Informal, Slang and Idiomatic Phrases
Definitions for all the common expressions used in everyday English speech, with examples of sentences using them.
www.geocities.com/

Australian Slang Dictionary
Collection of Australian slang words.
www.koalanet.com.au/

The Online Dictionary of Playground Slang
An indexed dictionary providing many of the colloquialisms and slang words used, past and present, over the English-speaking world.
www.odps.org/

The New American Sub-Standard Politically Incorrect Dictionary
A glossary of offensive terms or terms with offensive meanings.
www.americansubstandard.com/

Urban Dictionary
U.S. slang dictionary whose submissions and various definitions are subject to votes for inclusion.
www.urbandictionary.com/

'Strine Decoded: Dictionary of Australian English
Dictionary covers Australian English, including slang, rhyming slang, Aboriginal English, place names, and animals.
www.artistwd.com/

The Alternative English Dictionary
Part of a collection of on-line dictionaries of so-called "bad language".
www.notam02.no/

Dictionary of Street Drug Slang Terms
A searchable database of over 4000 terms.
www.drugs.indiana.edu/

Chat Room Slang Dictionary
A constantly updated list of the most popular slang terms and acronyms used in chat rooms and instant messaging.
www.pulpchat.com/