A directory is a book that lists information, such as the names, addresses, and phone numbers of individuals, or the names and addresses of business entities, usually arranged alphabetically. … a telephone directory. Synonyms: index, list, list, record Guide to more synonyms.
A directory is an area of the computer that contains other directories and files and helps keep the computer organized. The files may be in a guide and control information used by the computer’s operating system or another program. See our archives page for more information about libraries.
Folders and files Directory is organized in a hierarchical structure, which means that they are arranged to resemble a tree. For example, a directory within another directory is called a subdirectory. The words parent and child are often used to refer to manuals and subdirectories, respectively.