    # File lib/wordnet/synset.rb, line 453
                    def serialize
                            @mutex.synchronize( Sync::SH ) {
                                    return [
                                            @filenum,
                                            @wordlist,
                                            @pointerlist,
                                            @frameslist,
                                            @gloss
                                    ].join( WordNet::Delim )
                            }
                    end