noun, Library Science.
a system for classifying books and other materials, using for its notation both letters and numerals to allow for expansion: originally developed at the Library of Congress for classifying its books and subsequently adopted by other libraries.
noun 1. a white, smooth paste for paper and lightweight cardboard.
noun 1. the study of the organization and administration of a library and of its technical, informational, and reference services.
noun, (used with a plural verb) 1. a folding stepladder, especially one folding into another piece of furniture, as a table or chair.
noun 1. a large pedestal writing table or desk.