SlangSite.com - SlangSite.
FlexiQuiz - FlexiQuiz is a powerful online test generator that enables you to create engaging online quizzes, tests, or exams in minutes. Choose from 100's of features to create a customized quiz that meets your objectives for business, education, or fun.
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.
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.
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.