#burl  a large rounded outgrowth on the trunk or branch of a tree
  supertype:  #plant_process__plantproces__enation  a natural projection or outgrowth from a plant body or organ
  substance:  #burl.wood
  part of:  #tree  a tall perennial woody plant having a main trunk and branches forming a distinct elevated crown; includes both gymnosperms and angiosperms

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