Cambridge Dictionary of American English

"The dictionary that enables learners to look up words and listen to how they are spoken. This edition combines the printed book with a CD-ROM that contains everything the learner will find in the dictionary, as well as spoken pronunciations for each entry word, links from every word in the text to the entry where that word is defined, and sophisticated tools that allow learners to search on grammar codes, parts of speech, and usage labels as well as words." -- from the publisher.