Dictionary of Contemporary English 6th Edition (for BlueDict and MDict)

The sixth edition of this best-selling dictionary ensures students produce more accurate English both in writing and speaking. Now with expanded Grammar information, students get extra help with grammar patterns and using the correct tenses. The integrated Collocations Dictionary shows learners which words to use together, whilst the integrated Thesaurus helps them to expand their vocabulary. Register Notes focus on the differences between spoken and written English. 

Just like many other third-party apps, BlueDict is only a database "reader". So you need to get the databases (.MDX / .MDD / .CSS files) then put them into /sdcard/BlueDict/Dicts or your specified path.