A considerable collection of books kept for use, and not as merchandise; as, a private library; a public library.
- A place in which literary and artistic materials, such as books, periodicals, newspapers, pamphlets, prints, records, and tapes, are kept for reading, reference, or lending.
- A collection of such materials, especially when systematically arranged.
- A room in a private home for such a collection.
- An institution or foundation maintaining such a collection.
- A commercial establishment that lends books for a fee.
- A series or set of books issued by a publisher.
- A collection of recorded data or tapes arranged for ease of use.
- A set of things similar to a library in appearance, function, or organization: a library of computer programs.
- Genetics A collection of cloned DNA sequences whose location and identity can be established by mapping the genome of a particular organism.