Librarian (noun)

A person who works in a library and is responsible for the management of its collections.

Origin:

Late 16th century: from latin librarius, from liber "book".

Examples:

1. The librarian helped the student find the information she needed for her research.
2. The librarian was praised for her vast knowledge of the library's collection.
3. The school hired a new librarian to manage its growing collection of books.
4. The librarian was responsible for organizing the library's books and maintaining its catalog.
5. Many students visited the library to ask the librarian for assistance in finding a book.