library

n. place where one can borrow books; collection of programs and commands used to build a program from source code in a programming language (Computers)

A library is a collection of information, sources, resources, and services: it is organized for use and maintained by a public body, an institution, or a private individual. In the more traditional sense, a library is a collection of books.This collection and services are used by people who choose not to — or cannot afford to — purchase an extensive collection themselves, who need material no individual can reasonably be expected to have, or who require professional assistance with their research.However, with the collection of media other than books for storing information, many libraries are now also repositories and access points for maps, prints, or other documents and artworks on various storage media such as microform (microfilm/microfiche), audio tapes, CDs, LPs, cassettes, videotapes, and DVDs. Libraries may also provide public facilities to access CD-ROMs, subscription databases, and the Internet.
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Noun
1. a room where books are kept; "they had brandy in the library"
(hypernym) room
(part-holonym) house
2. a collection of literary documents or records kept for reference or borrowing
(hypernym) collection, aggregation, accumulation, assemblage
(hyponym) bibliotheca
3. a depository built to contain books and other materials for reading and study
(synonym) depository library
(hypernym) depository, deposit, repository
(hyponym) athenaeum, atheneum
(part-meronym) carrel, carrell, cubicle, stall
4. (computing) a collection of standard programs and subroutines that are stored and available for immediate use
(synonym) program library, subroutine library
(hypernym) collection, aggregation, accumulation, assemblage
(part-meronym) library program
(classification) programming, programing, computer programming, computer programing
5. a building that houses a collection of books and other materials
(hypernym) building, edifice
(hyponym) National Library of Medicine, United States National Library of Medicine, U.S. National Library of Medicine

(n.)
A considerable collection of books kept for use, and not as merchandise; as, a private library; a public library.
  

(n.)
A building or apartment appropriated for holding such a collection of books.
  

In genetics, a library is an unordered collection of clones (i.e., cloned DNA from a particular organism), whose relationship to each other can be established by physical mapping. For example, you can have an E. coli library or a human DNA library. Among the types of libraries, there are genomic libraries and arrayed libraries. (See Library, genomic and Library, arrayed).