index.html
<script type="text/javascript">
        $('span').click(function() {
            var e = this;
            $.ajax({
              url: '/translate_word/',
              type: "GET",
              data: {wv: $(e).attr('data-wv')}, // или $(e).data('wv'), или $(e).data().wv
              success: function(word) {
                  var ru = word.split(';');
                var en_tr = ru[ru.length-1].split('|');
                var en = en_tr[0];
                var tr = en_tr[1];

                var ru_all = '';
                for(var i = 0; i < ru.length-1; i++){
                  ru_all += ru[i] + '\n';
                }
                $("h1.ru_wrd").text(ru_all);
                $("h1.en_wrd").text(en);
                $("h1.tr_wrd").text(tr);
              }
            });
          });
        </script>

urls.py
urlpatterns = [
    url(r'translate_word/$', views.translate_word, name='translate_word'),
]

views.py
def translate_word(request):
    if request.method == "GET":
        en_word = request.GET['wv']