急所
  きゅうじょ
  noun (common) (futsuumeishi)
  vital point (critical place to make a move in the game of Go)
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  急所
  きゅうしょ
  noun (common) (futsuumeishi)
  vitals
  tender spot
  key (of a problem)
  crux
  essential point
  secret
  see: 金的
  colloquialism
  male crotch (as a target in fighting)
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