We found 3 dictionaries that define the word audio books:

General (2 matching dictionaries)

1. audio books: Collins English Dictionary
2. audio-books, audio books: Wiktionary

Tech (1 matching dictionary)

3. Rane Professional Audio Reference (No longer online)

▸ Words similar to audio books ▸ Usage examples for audio books ▸ Idioms related to audio books ▸ Wikipedia articles (New!) ▸ Words that often appear near audio books ▸ Rhymes of audio books ▸ Invented words related to audio books