Collins Cobuild School Dictionary of American English
With innovations such as DefinitionsPLUS and vocabulary builders, the School Dictionary of American English transforms the learner's dictionary from an occasional reference into the ultimate resource and must-have dictionary for language learners. The definitions have been created using a controlled vocabulary, and each definition has been reviewed by a team of classroom teachers to ensure that they are appropriate for learners at the intermediate level.
The 8th edition of the Collins COBUILD Advanced Learner's Dictionary offers up-to-date coverage of today's English in a clear, attractive format. This dictionary is ideal for upper-intermediate and advanced learners of English. It covers all the words, phrases, and idioms that students need to master in order to speak and write effective English. With full-sentence definitions written in simple, natural English, this dictionary is easy to use and understand. The examples, taken from the 4.5-billion-word Collins Corpus, show learners how the words are used in authentic contexts.
The Dictionary of Pronunciation for Current English is the most up-to-date record of the pronunciation of British and American English. Based on research by a joint UK and US team of linguistics experts, this is a unique survey of how English is really spoken in the twenty-first century.
The most comprehensive dictionary of its type available, The Routledge Dictionary of Pronunciation for Current English is the essential reference for those interested in English pronunciation.
The Concise Oxford Dictionary The Oxford Dictionary contains over 78,000 headwords providing coverage of more than 240,000 words, phrases and meanings. This dictionary offers rich vocabulary coverage including rare and historical terms, as well as scientific and technical vocabulary, with hundreds of helpful notes on grammar and usage. The Concise Oxford Thesaurus The Oxford Thesaurus contains over 17,000 headwords offering more than 365,000 synonyms covering everyday vocabulary as well as more unusual and specialist words, with clear labeling of informal, dialect, literary, and technical items.
This is the full text of Oxd English Dictionary (the 20-volume edition) including etymologies and quotes. It's in color and hence easy to read. The download link is direct and eternal.