Meaning of DIRECTORY in English
A directory is catalog for files stored on the Hard disk of a PC ; a mechanism to group the files so that the user is not overwhelmed by a one huge long list of all the files stored on the hard disk. All the filenames belonging to a particular project, for example, might be kept together in one directory. The topmost directory is called the root directory ; the directories within a directory are called sub directories.
English glossary of Internet and PC terminology. Английский глоссарий Интернет и ПК терминологии. 2012