#yam_plant__yamplant__yam  any of a number of tropical vines of the genus Dioscorea many having edible tuberous roots
  supertype:  vine  weak-stemmed plant that derives support from climbing, twining, or creeping along a surface
  subtype:  white_yam  cinnamon_vine  air_potato  cush-cush
  member of:  genus_Dioscorea
  part:  yam.tuber  edible tuber of any of several yams

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