What does a unabridged dictionary provide?

 a unabridged dictionary is ¨a book of words of a particular language and their accepted definitions, origins, parts of speech, pronunciation, spelling and in some cases a sample of their …use. Depending on the age and target audience, it may also contain cultural slang and/or other non-traditional words as well. A "language translation dictionary" lists the words of one language and their equivalent words in another language.¨ source: http://www.answers.com/Q/What_does_an_unabridged_dictionary_provide

Idon’t understand this and wym