"bulkhead line" meaning in English

{
  "forms": [
    {
      "form": "bulkhead lines",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "bulkhead line (plural bulkhead lines)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "_dis1": "48 52",
      "word": "pierhead line"
    }
  ],
  "senses": [
    {
      "categories": [
        {
          "_dis": "60 40",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "An officially set line along a shoreline, usually outside of the dry land, to demark a territory allowable to be treated as dry land, to separate the jurisdictions of dry land and water authorities, for construction and riparian activities, to establish limits to the allowable obstructions to navigation, etc."
      ],
      "id": "en-bulkhead_line-en-noun-~EvaptKC"
    },
    {
      "categories": [
        {
          "kind": "other",
          "name": "American English",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "A line in a navigable waterway established by the U.S. Army Corps of Engineers, beyond which solid fill is not permitted."
      ],
      "id": "en-bulkhead_line-en-noun-4Ar7wzUt",
      "raw_glosses": [
        "(US) A line in a navigable waterway established by the U.S. Army Corps of Engineers, beyond which solid fill is not permitted."
      ],
      "tags": [
        "US"
      ]
    }
  ],
  "wikipedia": [
    "bulkhead line"
  ],
  "word": "bulkhead line"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns"
  ],
  "forms": [
    {
      "form": "bulkhead lines",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "bulkhead line (plural bulkhead lines)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "pierhead line"
    }
  ],
  "senses": [
    {
      "glosses": [
        "An officially set line along a shoreline, usually outside of the dry land, to demark a territory allowable to be treated as dry land, to separate the jurisdictions of dry land and water authorities, for construction and riparian activities, to establish limits to the allowable obstructions to navigation, etc."
      ]
    },
    {
      "categories": [
        "American English"
      ],
      "glosses": [
        "A line in a navigable waterway established by the U.S. Army Corps of Engineers, beyond which solid fill is not permitted."
      ],
      "raw_glosses": [
        "(US) A line in a navigable waterway established by the U.S. Army Corps of Engineers, beyond which solid fill is not permitted."
      ],
      "tags": [
        "US"
      ]
    }
  ],
  "wikipedia": [
    "bulkhead line"
  ],
  "word": "bulkhead line"
}