browser n.
A program specifically designed to help users view and
navigate hypertext, on-line documentation, or a database. While
this general sense has been present in jargon for a long time,
the proliferation of browsers for the World Wide Web after 1992
has made it much more popular and provided a central or default
techspeak meaning of the word previously lacking in hacker usage.
Nowadays, if someone mentions using a `browser' without
qualification, one may assume it is a Web browser.