Urban Dictionary - Urban Dictionary is a Web-based dictionary of slang words and phrases.
SlangLang - SlangLang is an editorial dictionary for slang words mainly used on the internet. Here you will find definitions and information about the origin and spread of terms, memes and emotes that are used on the net.
SlangSite.com - SlangSite.
Hinglish Dictionary - HinglishDictionary.com is an archive of user submitted Hinglish words. Users can register and create accounts and add new words, that must have a touch of Hinglish language in it.
Reverse Dictionary - Describe a concept and get back a list of words
The Online Slang Dictionary - Learn thousands of real slang words or add your own.