#chute__slideway__sloping_trough__slopingtrough  sloping channel through which things can descend
  supertype:  #gutter__trough  a channel along the eaves or on the roof; collects and carries away rainwater
  part:  #skid.board
  subtype:  #coal_chute  a chute for coal
  subtype:  #water_chute__waterchute  chute with flowing water down which toboggans and tubes and people slide into a pool

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