path

path n.  1. A {bang path} or explicitly routed
   {{Internet address}}; a node-by-node specification of a link
   between two machines.  2. [UNIX] A filename, fully specified
   relative to the root directory (as opposed to relative to the
   current directory; the latter is sometimes called a `relative
   path').  This is also called a `pathname'.  3. [UNIX and MS-DOS]
   The `search path', an environment variable specifying the
   directories in which the {shell} (COMMAND.COM, under MS-DOS)
   should look for commands.  Other, similar constructs abound under
   UNIX (for example, the C preprocessor has a `search path' it
   uses in looking for `#include' files).