word processor

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A computer system or program designed for word processing.
• noun One who uses a word processor.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A device similar to a simple computer, designed for word processing
• noun Software that provides word processing functions on a computer, typically including typeface selection, line justification and other formatting, pagination, and numerous other features. Compare text editor.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun an application that provides the user with tools needed to write and edit and format text and to send it to a printer