"traverse board" meaning in English

{
  "forms": [
    {
      "form": "traverse boards",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "traverse board (plural traverse boards)",
      "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 small board hung near the helmsman, having the points of the compass marked on it, and for each point as many holes as there are half hours in a watch. It was used for recording the courses made by the ship in each half hour, by putting a peg in the corresponding hole."
      ],
      "id": "en-traverse_board-en-noun-SWFl9xSt",
      "links": [
        [
          "nautical",
          "nautical"
        ],
        [
          "helmsman",
          "helmsman"
        ],
        [
          "point",
          "point"
        ],
        [
          "compass",
          "compass"
        ],
        [
          "hole",
          "hole"
        ],
        [
          "watch",
          "watch"
        ],
        [
          "course",
          "course"
        ],
        [
          "peg",
          "peg"
        ]
      ],
      "raw_glosses": [
        "(nautical) A small board hung near the helmsman, having the points of the compass marked on it, and for each point as many holes as there are half hours in a watch. It was used for recording the courses made by the ship in each half hour, by putting a peg in the corresponding hole."
      ],
      "topics": [
        "nautical",
        "transport"
      ],
      "translations": [
        {
          "code": "he",
          "lang": "Hebrew",
          "roman": "luakh nivut",
          "sense": "Navigational instrument for dead reckoning",
          "tags": [
            "masculine"
          ],
          "word": "לוּחַ נִוּוּט"
        },
        {
          "code": "he",
          "lang": "Hebrew",
          "roman": "luakh nivut mekorav",
          "sense": "Navigational instrument for dead reckoning",
          "tags": [
            "masculine"
          ],
          "word": "לוּחַ נִוּוּט מְקוֹרָב"
        }
      ]
    }
  ],
  "word": "traverse board"
}

{
  "forms": [
    {
      "form": "traverse boards",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "traverse board (plural traverse boards)",
      "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 small board hung near the helmsman, having the points of the compass marked on it, and for each point as many holes as there are half hours in a watch. It was used for recording the courses made by the ship in each half hour, by putting a peg in the corresponding hole."
      ],
      "links": [
        [
          "nautical",
          "nautical"
        ],
        [
          "helmsman",
          "helmsman"
        ],
        [
          "point",
          "point"
        ],
        [
          "compass",
          "compass"
        ],
        [
          "hole",
          "hole"
        ],
        [
          "watch",
          "watch"
        ],
        [
          "course",
          "course"
        ],
        [
          "peg",
          "peg"
        ]
      ],
      "raw_glosses": [
        "(nautical) A small board hung near the helmsman, having the points of the compass marked on it, and for each point as many holes as there are half hours in a watch. It was used for recording the courses made by the ship in each half hour, by putting a peg in the corresponding hole."
      ],
      "topics": [
        "nautical",
        "transport"
      ]
    }
  ],
  "translations": [
    {
      "code": "he",
      "lang": "Hebrew",
      "roman": "luakh nivut",
      "sense": "Navigational instrument for dead reckoning",
      "tags": [
        "masculine"
      ],
      "word": "לוּחַ נִוּוּט"
    },
    {
      "code": "he",
      "lang": "Hebrew",
      "roman": "luakh nivut mekorav",
      "sense": "Navigational instrument for dead reckoning",
      "tags": [
        "masculine"
      ],
      "word": "לוּחַ נִוּוּט מְקוֹרָב"
    }
  ],
  "word": "traverse board"
}