The American Heritage® Dictionary of the English Language, 4th Edition
n. A person who is a specialist in library work.
n. A person who is responsible for a collection of specialized or technical information or materials, such as musical scores or computer documentation.
n. One who cares for the publications, files etc. in a library, whether staff or volunteer
n. A person who processes and organizes information
the GNU version of the Collaborative International Dictionary of English
n. One who has the care or charge of a library.
n. One who copies manuscript books.
The Century Dictionary and Cyclopedia
n. One who transcribes or copies books.
n. The keeper or custodian of a library; one who has charge of the books and other contents of a library.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a professional person trained in library science and engaged in library services
Word Usage
"Those who even have the word "librarian" in their vocabularies often think library staff are only good for pointing to different sections of the stacks."