Today's Parola del Giorno is the noun (and also interjection drindrin), il drin(drin), which means dingaling or ringing.

It is the sound that an old phone from the 1960's might make.

It is also often used to describe the ringing one might hear from a bicycle bell.  

See the noun used below:

Il drin del vecchio telefono mi ha svegliato alle due di mattina!  Che suono fastidioso! Adesso non riesco ad addormentarmi.

The ringing of the old telephone woke me up at 2:00 AM! What a bothersome sound! Now I cannot get back to sleep!