
• (n.) Alt. of Ritornello
Found on 
http://thinkexist.com/dictionary/meaning/ritornelle/
Rit`or·nelle' Ri`tor*nel'lo  noun [ Italian  ritornello , dim. of  ritorno return, from  ritornare to return: confer French  ritournelle .]  (Mus.)  (a)  A short return or repetition; a concluding symphony to an air, often consisting of the burden of...
Found on http://www.encyclo.co.uk/webster/R/86
In music a ritornelle is a short return or repetition; a concluding symphony to an air, often consisting of the burden of the song. The term also describes a short intermediate symphony, or instrumental passage, in the course of a vocal piece; an interlude.
Found on http://www.probertencyclopaedia.com/browse/VR.HTM
  No exact match found.