黑馬

黑马
hēimǎ
  1. dark horse
  2. fig. unexpected winner

CEDICT

Entry Composition

1 黑 hēi
  1. black
  2. dark
  3. sinister
  4. secret
  5. shady
  6. illegal
  7. to hide (sth) away
  8. to vilify
  9. (loanword) to hack (computing)
2 馬 mǎ
  1. horse
  2. horse or cavalry piece in Chinese chess
  3. knight in Western chess

classifier: 匹