classical in WordNet English dictionary

1. of recognized authority or excellence
   "the definitive work on Greece"; "classical methods of navigation"
   authoritative  classical  classic  definitive 
   
2. of or relating to the most highly developed stage of an earlier civilisation and its culture
   "classic Cinese pottery"
   classical  classic 
   
3. of or pertaining to or characteristic of the ancient Greek and Roman cultures
   "classical mythology"; "classical
   classical  classic  Greco-Roman  Graeco-Roman  Hellenic 
   
4. of or relating to the study of the literary works of ancient Greece and Rome
   " a classical scholar"
   classical 
   
5. (language) having the form used by ancient standard authors
   "classical Greek
   classical 
   

1. traditional genre of music conforming to an established form and appealing to critical interest and developed musical taste
   classical music  classical  serious music