#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
  subtype:  coal_chute  water_chute
  part:  skid.board  one of a pair of planks used to make a track for rolling or sliding objects

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