What is a library?
1. A private commercial establishment for the
lending of books, the borrower paying either a
fixed sum for each book lent or a periodical
subscription.
2. a great mass of learning or knowledge;
3. the objects of a person's study, the sources on
which he depends for instruction.
4. Computers. An organized collection of routines,
esp. of tested routines suitable for a particular
model of computer
5. Biology. a collection of sequences of DNA …
that represent the genetic material of a
particular organism or tissue