a dictionary of synonyms and antonyms.

any dictionary, encyclopedia, or other comprehensive reference book.

a storehouse, repository, or treasury.

Computers .

an index to information stored in a computer, consisting of a comprehensive list of subjects concerning which information may be retrieved by using the proper key terms.

a dictionary of synonyms and antonyms stored in memory for use in word processing.

noun

glossary , language reference book , lexicon , onomasticon , reference book , sourcebook , storehouse of words , terminology , treasury of words , vocabulary , word list , dictionary