minstrel         
noun [ C ] uk/ˈmɪn.strəl/ us/ˈmɪn.strəl/
 (11至15世纪的)吟游乐师,吟游歌手
a travelling musician and singer common between the 11th and 15th centuries
  a wandering minstrel 到处流浪的吟游歌手 
  (美国内战前后)化上暗妆参加取笑黑人的歌舞滑稽演出的白人
a white performer wearing dark make-up who took part in minstrel shows