Source : Webster's Revised Unabridged Dictionary (1913)

Directory \Di*rect"o*ry\, a. [L. directorius.]
   Containing directions; enjoining; instructing; directorial.

Directory \Di*rect"o*ry\, n.; pl. {Directories}.
   1. A collection or body of directions, rules, or ordinances;
      esp., a book of directions for the conduct of worship; as,
      the Directory used by the nonconformists instead of the
      Prayer Book.

   2. A book containing the names and residences of the
      inhabitants of any place, or of classes of them; an
      address book; as, a business directory.

Source : WordNet®

directory
     n 1: an alphabetical list of names and addresses
     2: (computer science) a listing of the files stored in memory
        (usually on a hard disk)

Source : Free On-Line Dictionary of Computing

directory
     
         A node in a hierarchical {file system} which
        contains zero or more other nodes - generally, {files} or
        other directories.
     
        Compare {folder}.
     
        (1997-04-10)