#gutter__trough  a channel along the eaves or on the roof; collects and carries away rainwater
  supertype:  conduit__channel  a passage for water (or other fluids)
  subtype:  chute  cullis
  part of:  gable_roof__gableroof__saddle_roof__saddleback__saddleback_roof  a double sloping roof with a ridge and gables at each end

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