"OB marker" meaning in English

{
  "etymology_text": "From the golfing term OB (“out of bounds”).",
  "forms": [
    {
      "form": "OB markers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "OB marker (plural OB markers)",
      "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": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Singapore English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Freedom of speech",
          "orig": "en:Freedom of speech",
          "parents": [
            "Freedom",
            "Law",
            "Society",
            "Justice",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Singaporean politics",
          "orig": "en:Singaporean politics",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "A governmental restriction on free speech, limiting topics that can be written about."
      ],
      "id": "en-OB_marker-en-noun-Lpdl0kwM",
      "links": [
        [
          "governmental",
          "governmental"
        ],
        [
          "restriction",
          "restriction"
        ],
        [
          "free speech",
          "free speech"
        ],
        [
          "topic",
          "topic"
        ]
      ],
      "raw_glosses": [
        "(Singapore) A governmental restriction on free speech, limiting topics that can be written about."
      ],
      "tags": [
        "Singapore"
      ],
      "wikipedia": [
        "OB marker"
      ]
    }
  ],
  "word": "OB marker"
}

{
  "etymology_text": "From the golfing term OB (“out of bounds”).",
  "forms": [
    {
      "form": "OB markers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "OB marker (plural OB markers)",
      "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",
        "Pages with 1 entry",
        "Pages with entries",
        "Singapore English",
        "en:Freedom of speech",
        "en:Singaporean politics"
      ],
      "glosses": [
        "A governmental restriction on free speech, limiting topics that can be written about."
      ],
      "links": [
        [
          "governmental",
          "governmental"
        ],
        [
          "restriction",
          "restriction"
        ],
        [
          "free speech",
          "free speech"
        ],
        [
          "topic",
          "topic"
        ]
      ],
      "raw_glosses": [
        "(Singapore) A governmental restriction on free speech, limiting topics that can be written about."
      ],
      "tags": [
        "Singapore"
      ],
      "wikipedia": [
        "OB marker"
      ]
    }
  ],
  "word": "OB marker"
}