browser

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

• noun One that browses.
• noun Computers A program that accesses and displays files and other data available on the Internet and other networks.

from The Century Dictionary.

• noun One who browses. Also spelled browzer.

from the GNU version of the Collaborative International Dictionary of English.

• noun An animal that browses.
• noun (Computers) a computer program that permits the user to view multiple electronic documents in a flexible sequence by the process of activating hypertext “buttons” within one document, which serves as a reference to the location of related document. The term is currently (late 1990's) used mostly for programs which allow traversing hypertext paths in documents on the internet. A typical browser will permit the user to easily reverse direction, and view again documents previously accessed.

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

• noun A person or animal who browses.
• noun A person who, while shopping, purchases nothing.
• noun computing A web browser.

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

• noun a viewer who looks around casually without seeking anything in particular
• noun a program used to view HTML documents