### Clue: What was heard in Rome and a quarter of Paris (5)
### Answer: LATIN 
 ### Explanation: Definition: What was heard in Rome,a quarter of Paris
  Double defn: 1st: Language heard in Rome long ago; and 2nd: Latin Quarter is an area in Paris known for the number of educational institutions there, hence its student life, lively atmosphere and bistros.  Interestingly, its name comes from the language that was spoken around and in the University, since it was the language of learning in the Middle Ages.