木魚 [ㄇㄨˋ ㄩˊ; mu4 yu2]
  mokugyo
  wooden fish (percussion instrument)
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  木魚
  杢魚
  もくぎょ
  noun (common) (futsuumeishi)
  Buddhist term
  fish gong
  fish wood block
  temple block
  round, hollow, wood block (vaguely fish-shaped, usu. with scales), struck while chanting sutras
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