A Google Custom Search Engine enables Web site authors to host a Web site (or
Web) search box and search results on on their site. Users can customize the
search engine that is built using Google's core search technology. In creating
your own Google Custom Search Engine you can prioritize or restrict search
results based on specific Web sites and pages you specify. Once you've defined
your search engine, Google provides code for a search box that users can copy
and then paste right in to their own Web site or blog.
See also "Google
Products and Services" in the
Quick Reference section of Webopedia.