"spark arrester" meaning in English

{
  "forms": [
    {
      "form": "spark arresters",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "spark arrester (plural spark arresters)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "spark arrestor"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1941 September, “The Why and the Wherefore: Fires in Trains”, in Railway Magazine, page 432",
          "text": "Although certain overseas railways make fairly extensive use of spark arresters (apart from wood-burning locomotives) they are rare in this country, for, as Sir Nigel Gresley once remarked, the best way to avoid spark throwing is to make sure the engine is master of its job; [...].",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Alternative form of spark arrestor"
      ],
      "id": "en-spark_arrester-en-noun-vydAANtF",
      "links": [
        [
          "spark arrestor",
          "spark arrestor#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "spark arrester"
}

{
  "forms": [
    {
      "form": "spark arresters",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "spark arrester (plural spark arresters)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "spark arrestor"
        }
      ],
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "1941 September, “The Why and the Wherefore: Fires in Trains”, in Railway Magazine, page 432",
          "text": "Although certain overseas railways make fairly extensive use of spark arresters (apart from wood-burning locomotives) they are rare in this country, for, as Sir Nigel Gresley once remarked, the best way to avoid spark throwing is to make sure the engine is master of its job; [...].",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Alternative form of spark arrestor"
      ],
      "links": [
        [
          "spark arrestor",
          "spark arrestor#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "spark arrester"
}