directory

Etymology

From Middle English directorie, from Medieval Latin directorium.

noun

1. A list of names, addresses etc, of specific classes of people or organizations, often in alphabetical order or in some classification.
   look up an address in the directory
2. (computing) A structured listing of the names and characteristics of the files on a storage device.
3. (computing) A virtual container in a computer's file system, in which files and other directories may be stored. The files and subdirectories in a directory are usually related.

adj

1. Containing directions; instructing; directorial.