棟梁 [ㄉㄨㄥˋ ㄌㄧㄤˊ; dong4 liang2]
  ridgepole
  ridgepole and beams
  person able to bear heavy responsibility
  mainstay (of organization)
  pillar (of state)
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  棟梁
  とうりょう
  noun (common) (futsuumeishi)
  `taru' adjective
  chief support
  pillar (e.g. of nation)
  leader
  boss
  master (craftsman)
  noun (common) (futsuumeishi)
  beams and ridge supports of a roof (orig. meaning)
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