Source : WordNet®

Apache
     n 1: any member of Athapaskan tribes that migrated to the
          southwestern desert (from Arizona to Texas and south
          into Mexico); fought a losing battle from 1861 to 1886
          with the United States and were resettled in Oklahoma
     2: a Parisian gangster
     3: the language of the Apache people

Source : Free On-Line Dictionary of Computing

Apache
     
         A {open source} {HTTP} server for
        {Unix}, {Windows NT}, and other {platforms}.  Apache was
        developed in early 1995, based on code and ideas found in the
        most popular HTTP server of the time, {NCSA httpd} 1.3.  It
        has since evolved to rival (and probably surpass) almost any
        other {Unix} based HTTP server in terms of functionality, and
        speed.  Since April 1996 Apache has been the most popular HTTP
        server on the {Internet}, in May 1999 it was running on 57% of
        all web servers.
     
        It features highly configurable error messages, {DBM}-based
        {authentication} {databases}, and {content negotiation}.
     
        Latest version: 1.3.9, as of 1999-10-27.
     
        {Home (http://www.apache.org/httpd.html)}.
     
        {FAQ (http://www.apache.org/docs/misc/FAQ.html)}.
     
        (1999-10-27)