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.

Dictionary.com - Dictionary.com is the world’s leading digital dictionary. We provide millions of English definitions, spellings, audio pronunciations, example sentences, and word origins.

DAREDictionary.com - Dictionary of American Regional English presents the meaning of words region wise.

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.

Wordspy.com - Finding the meaning of a new word or the word that is not being used on the international level is surely a way of conjuring its existence.