di·rec·to·ry (dĭ-rĕk'tə-rē, dī-)
n., pl., -ries.

1. A book containing an alphabetical or classified listing of names, addresses, and other data, such as telephone numbers, of specific persons, groups, or firms.
2. Computer Science.
   1. A listing of the files contained in a storage device, such as a magnetic disk.
   2. A description of the various characteristics of a file, such as the layout of the fields in it.
3. A book of rules or directions.
4. A group or body of directors.

adj.
Serving to direct.

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The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.

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