Definition of library noun from the Oxford Advanced American Dictionary

      

    library

     noun
    noun
    NAmE//ˈlaɪˌbrɛri//
     
    (pl. libraries)
     
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  1. 1a building in which collections of books, CDs, newspapers, etc. are kept for people to read, study, or borrow a public/reference/university, etc. library a library book
  2. 2a room in a large house where most of the books are kept
  3. 3(formal) a personal collection of books, music, etc. a new edition to add to your library
  4. 4a series of books, recordings, etc. produced by the same company and similar in appearance a library of children's classics
See the Oxford Advanced Learner's Dictionary entry: library