Wiktionary
n. (context computing English) A program which allows a user to edit the contents of a text file, usually in an interactive way with immediate visual feedback. Compare word processor.
WordNet
n. an editor who prepares text for publication [syn: copy editor, copyreader]
(computer science) an application that can be used to create and view and edit text files
Wikipedia
A text editor is a type of program used for editing plain text files. Such programs are sometimes known as "notepad" software, following the Microsoft Notepad.
Text editors are provided with operating systems and software development packages, and can be used to change configuration files, documentation files and programming language source code.
Usage examples of "text editor".
Emacs in its normal form is the hacker's word processor, a text editor that offers little in the way of fancy formatting capabilities but does the basic job of editing plain text very well.
When Cal tried to view it with an ordinary text editor, the file scrolled down his screen as gibberish.