"rescue board" meaning in English

{
  "forms": [
    {
      "form": "rescue boards",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "rescue board (plural rescue 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"
        }
      ],
      "examples": [
        {
          "text": "He got in trouble and so I grabbed a rescue board, paddled out and grabbed him.",
          "type": "example"
        }
      ],
      "glosses": [
        "A large wide board similar to a surfboard used for surf lifesaving. It is propelled by the rescuer (usually a lifeguard) paddling using their arms, either lying face down or sitting up on their knees, and usually has straps along the sides to hold onto."
      ],
      "id": "en-rescue_board-en-noun-uaW7Zxw6",
      "links": [
        [
          "surfboard",
          "surfboard"
        ],
        [
          "surf",
          "surf"
        ],
        [
          "lifesaving",
          "lifesaving"
        ],
        [
          "lifeguard",
          "lifeguard"
        ],
        [
          "paddling",
          "paddling"
        ]
      ]
    }
  ],
  "word": "rescue board"
}

{
  "forms": [
    {
      "form": "rescue boards",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "rescue board (plural rescue 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",
        "English terms with usage examples"
      ],
      "examples": [
        {
          "text": "He got in trouble and so I grabbed a rescue board, paddled out and grabbed him.",
          "type": "example"
        }
      ],
      "glosses": [
        "A large wide board similar to a surfboard used for surf lifesaving. It is propelled by the rescuer (usually a lifeguard) paddling using their arms, either lying face down or sitting up on their knees, and usually has straps along the sides to hold onto."
      ],
      "links": [
        [
          "surfboard",
          "surfboard"
        ],
        [
          "surf",
          "surf"
        ],
        [
          "lifesaving",
          "lifesaving"
        ],
        [
          "lifeguard",
          "lifeguard"
        ],
        [
          "paddling",
          "paddling"
        ]
      ]
    }
  ],
  "word": "rescue board"
}