Noun | 1. | ![]() book of facts, reference book, reference work, reference - a book to which you can refer for authoritative facts; "he contributed articles to the basic reference work on that topic" dictionary, lexicon - a reference book containing an alphabetical list of words with information about them onomasticon - a list of proper nouns naming persons or places vocabulary - a listing of the words used in some enterprise glossary, gloss - an alphabetical list of technical terms in some specialized field of knowledge; usually published as an appendix to a text on that field synonym finder, thesaurus - a book containing a classified list of synonyms |