Search::Dict(3)

NNAAMMEE
       Search::Dict, look - search for key in dictionary file

SSYYNNOOPPSSIISS
           use Search::Dict;
           look *FILEHANDLE, $key, $dict, $fold;

DDEESSCCRRIIPPTTIIOONN
       Sets file position in FILEHANDLE to be first line greater
       than or equal (stringwise) to $key.  Returns the new file
       position, or -1 if an error occurs.

       The flags specify dictionary order and case folding:

       If $dict is true, search by dictionary order (ignore
       anything but word characters and whitespace).

       If $fold is true, ignore case.