Definition of library noun from the Oxford Advanced American Dictionary

Oxford3000

library

noun
/ˈlaɪˌbrɛri/
 
plural libraries
 
1 a building in which collections of books, CDs, newspapers, etc. are kept for people to read, study, or borrowa public/reference/university, etc. librarya library book2 a room in a large house where most of the books are kept3 (formal) a personal collection of books, music, etc.a new edition to add to your library4 a series of books, recordings, etc. produced by the same company and similar in appearancea library of children's classics