浮岩
  浮石
  うきいわ
  noun (common) (futsuumeishi)
  rock partially submerged in water
  rock partially emerging from the water
  pumice stone
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  浮石
  浮き石
  うきいし
  noun (common) (futsuumeishi)
  pumice stone
  loose rock
  loose stone
  floating group (in the game of go)
  group without a base
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