ManyThings.org - ManyThings is a multiplatform and user friendly application for students of ESL or EFL to learn the meanings and definitions of different terms and phrases.
Urban Dictionary - Urban Dictionary is a Web-based dictionary of slang words and phrases.
SlangSite.com - SlangSite.
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.
PronounceItRight - PronounceItRight, establishes order in the huge phonetic mess of global communications.
Google Translate - Google's free service instantly translates words, phrases, and web pages between English and over 100 other languages.