Definition of aficionado noun from the Oxford Advanced American Dictionary
aficionado
noun
/əˌfɪʃəˈnɑdoʊ; əˌfɪʃiə‑/
pluralaficionados
a person who likes a particular sport, activity, or subject very much and knows a lot about ita ballet aficionado/an aficionado of balletThis coffee is regarded by aficionados as one of the world's finest.