"speedboard" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "speed",
        "3": "board"
      },
      "expansion": "speed + board",
      "name": "com"
    }
  ],
  "etymology_text": "speed + board",
  "forms": [
    {
      "form": "speedboards",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "speedboard (plural speedboards)",
      "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"
        }
      ],
      "examples": [
        {
          "ref": "1989, Wisconsin Traffic Safety Reporter",
          "text": "Speedboards would provide drivers immediate notification of their speed as they pass the device.",
          "type": "quotation"
        },
        {
          "ref": "1999, Locomotive Engineers Journal, volumes 106-108, page 4",
          "text": "Union Pacific has taken down Southern Pacific speedboards and replaced them with U.P. speedboards. U.P. speedboards for reduction of speed are posted at a measly 2,500 feet from the point of effect.",
          "type": "quotation"
        },
        {
          "ref": "2009, John Impagliazzo, Timo Järvi, Petri Paju, History of Nordic Computing 2: Second IFIP WG 9.7 Conference, page 16",
          "text": "The panel also keeps the driver informed of current speed limits and target speed limits at speedboards and signals ahead.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A board indicating a speed limit."
      ],
      "id": "en-speedboard-en-noun-ieo9W5A9",
      "links": [
        [
          "speed limit",
          "speed limit"
        ]
      ],
      "related": [
        {
          "word": "speedboarder"
        },
        {
          "word": "speedboarding"
        }
      ]
    }
  ],
  "word": "speedboard"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "speed",
        "3": "board"
      },
      "expansion": "speed + board",
      "name": "com"
    }
  ],
  "etymology_text": "speed + board",
  "forms": [
    {
      "form": "speedboards",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "speedboard (plural speedboards)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "speedboarder"
    },
    {
      "word": "speedboarding"
    }
  ],
  "senses": [
    {
      "categories": [
        "English compound terms",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms with quotations",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "1989, Wisconsin Traffic Safety Reporter",
          "text": "Speedboards would provide drivers immediate notification of their speed as they pass the device.",
          "type": "quotation"
        },
        {
          "ref": "1999, Locomotive Engineers Journal, volumes 106-108, page 4",
          "text": "Union Pacific has taken down Southern Pacific speedboards and replaced them with U.P. speedboards. U.P. speedboards for reduction of speed are posted at a measly 2,500 feet from the point of effect.",
          "type": "quotation"
        },
        {
          "ref": "2009, John Impagliazzo, Timo Järvi, Petri Paju, History of Nordic Computing 2: Second IFIP WG 9.7 Conference, page 16",
          "text": "The panel also keeps the driver informed of current speed limits and target speed limits at speedboards and signals ahead.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A board indicating a speed limit."
      ],
      "links": [
        [
          "speed limit",
          "speed limit"
        ]
      ]
    }
  ],
  "word": "speedboard"
}