#bollard__bitt  a strong post (as on a wharf or quay or ship for attaching mooring lines); "the road was closed to vehicular traffic with bollards"
  supertype:  #post.upright  upright consisting of a piece of timber or metal fixed firmly in an upright position
  subtype:  #riding_bitt  one of the large bitts used to secure the cable of a dropped anchor
  part of:  #wharf
  part:  #bitthead  the upper end of a bitt

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