Improve English Vocabulary For GRE, TOEFL, SAT, IELTS, CAT Using WordAhead Video Dictionary

WordAhead is a free vocabulary video site that help improve your english vocabulary with the help of videos to help you understand the meaning of a word instead of reading a definition.The videos are less than a minute, and show you the meaning, a picture that describes the word, and a sentence read with the new used in it and also synonyms and the part of speech at the top right corner.