蠕動 [ㄖㄨˊ ㄉㄨㄥˋ; ru2 dong4]
  to wiggle
  to squirm
  peristalsis (wave movement of gut wall)
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  蠕動
  ぜんどう
  noun (common) (futsuumeishi)
  noun or participle which takes the aux. verb suru
  nouns which may take the genitive case particle `no'
  vermiculation
  peristalsis
  crawling like a worm
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