"cardinal mark" meaning in English

{
  "forms": [
    {
      "form": "cardinal marks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "cardinal mark (plural cardinal marks)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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          "kind": "other",
          "name": "English entries with incorrect language header",
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        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Nautical",
          "orig": "en:Nautical",
          "parents": [
            "Transport",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A sea mark (a buoy or other floating or fixed structure) used in pilotage to indicate the position of a hazard and the direction of safe water."
      ],
      "id": "en-cardinal_mark-en-noun-jjIksYAO",
      "links": [
        [
          "nautical",
          "nautical"
        ],
        [
          "buoy",
          "buoy"
        ],
        [
          "pilotage",
          "pilotage"
        ]
      ],
      "raw_glosses": [
        "(nautical) A sea mark (a buoy or other floating or fixed structure) used in pilotage to indicate the position of a hazard and the direction of safe water."
      ],
      "topics": [
        "nautical",
        "transport"
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "type of sea mark",
          "word": "kardinaalimerkki"
        },
        {
          "code": "sv",
          "lang": "Swedish",
          "sense": "type of sea mark",
          "tags": [
            "neuter"
          ],
          "word": "kardinalmärke"
        }
      ],
      "wikipedia": [
        "cardinal mark"
      ]
    }
  ],
  "word": "cardinal mark"
}

{
  "forms": [
    {
      "form": "cardinal marks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
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      "expansion": "cardinal mark (plural cardinal marks)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        "Terms with Finnish translations",
        "Terms with Swedish translations",
        "en:Nautical"
      ],
      "glosses": [
        "A sea mark (a buoy or other floating or fixed structure) used in pilotage to indicate the position of a hazard and the direction of safe water."
      ],
      "links": [
        [
          "nautical",
          "nautical"
        ],
        [
          "buoy",
          "buoy"
        ],
        [
          "pilotage",
          "pilotage"
        ]
      ],
      "raw_glosses": [
        "(nautical) A sea mark (a buoy or other floating or fixed structure) used in pilotage to indicate the position of a hazard and the direction of safe water."
      ],
      "topics": [
        "nautical",
        "transport"
      ],
      "wikipedia": [
        "cardinal mark"
      ]
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "type of sea mark",
      "word": "kardinaalimerkki"
    },
    {
      "code": "sv",
      "lang": "Swedish",
      "sense": "type of sea mark",
      "tags": [
        "neuter"
      ],
      "word": "kardinalmärke"
    }
  ],
  "word": "cardinal mark"
}