directory

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. A structured listing of the names and characteristics of the files on a storage device.
3. 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.
4. A form of government with a collegial executive whose members jointly exercise power; the executive of such a government.

   “[…] at the Ufa State Conference it was it was the union's conception of a directory (rather than a dictatorship) to rule anti-Bolshevik Russia that won the day.”

adj

1. Containing directions; instructing; directorial.