"lateral mark" meaning in English

{
  "forms": [
    {
      "form": "lateral marks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "lateral mark (plural lateral marks)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Nautical",
          "orig": "en:Nautical",
          "parents": [
            "Transport",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A buoy or other navigational mark denoting the port or starboard edge of a channel"
      ],
      "id": "en-lateral_mark-en-noun-AetKruVV",
      "links": [
        [
          "nautical",
          "nautical"
        ],
        [
          "buoy",
          "buoy"
        ],
        [
          "starboard",
          "starboard"
        ],
        [
          "channel",
          "channel"
        ]
      ],
      "raw_glosses": [
        "(nautical) A buoy or other navigational mark denoting the port or starboard edge of a channel"
      ],
      "topics": [
        "nautical",
        "transport"
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "type of sea mark",
          "word": "lateraalimerkki"
        }
      ]
    }
  ],
  "word": "lateral mark"
}

{
  "forms": [
    {
      "form": "lateral marks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "lateral mark (plural lateral marks)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "en:Nautical"
      ],
      "glosses": [
        "A buoy or other navigational mark denoting the port or starboard edge of a channel"
      ],
      "links": [
        [
          "nautical",
          "nautical"
        ],
        [
          "buoy",
          "buoy"
        ],
        [
          "starboard",
          "starboard"
        ],
        [
          "channel",
          "channel"
        ]
      ],
      "raw_glosses": [
        "(nautical) A buoy or other navigational mark denoting the port or starboard edge of a channel"
      ],
      "topics": [
        "nautical",
        "transport"
      ]
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "type of sea mark",
      "word": "lateraalimerkki"
    }
  ],
  "word": "lateral mark"
}