From the hacker's dictionary (highly recommended reading!)
grep /grep/ vi.
[from the qed/ed editor idiom g/re/p, where re stands for a regular expression, to Globally search for the Regular Expression and Print the lines containing matches to it, via Unix grep(1)] To rapidly scan a file or set of files looking for a particular string or pattern (when browsing through a large set of files, one may speak of `grepping around'). By extension, to look for something by pattern. "Grep the bulletin board for the system backup schedule, would you?" See also vgrep.
Greplaw /greplaw/ foo.
[from the bowels of Harvard Law School, where law stands for the Berkman Center for Internet and Society, to search for patterns and themes in information technology law and print matches to the Web, via Slashcode] A Website containing the latest news, commentary, and discussion about Internet and computer law and policy. "Greplaw is the best Website I've ever seen." See also "geeks, laws, everything in between."
Still confused? Read our FAQ [ http://grep.law.harvard.edu/faq.shtml ].