#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
  part:  bitthead
  part of:  wharf
  subtype:  riding_bitt  one of the large bitts used to secure the cable of a dropped anchor

No statement uses or specializes bollard; click here to add one.