"fire stop" meaning in English

{
  "forms": [
    {
      "form": "fire stops",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "fire stop (plural fire stops)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "firestop"
        }
      ],
      "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"
        }
      ],
      "examples": [
        {
          "ref": "1951 March 11, “Nation's Owners Can Expect 400,000 Fires Every Year”, in Milwaukee Journal, page 12:",
          "text": "If you own or are building a frame house, make sure that it is adequately fire stopped. Fire stops are blocks of wood, brick or gypsum board placed between the walls and partitions at each floor level and at the eaves level. These blocks retard the upward passage of fire between the studs in hollow walls.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Alternative spelling of firestop"
      ],
      "id": "en-fire_stop-en-noun-jfwVifXo",
      "links": [
        [
          "firestop",
          "firestop#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "fire stop"
}

{
  "forms": [
    {
      "form": "fire stops",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "fire stop (plural fire stops)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "firestop"
        }
      ],
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "1951 March 11, “Nation's Owners Can Expect 400,000 Fires Every Year”, in Milwaukee Journal, page 12:",
          "text": "If you own or are building a frame house, make sure that it is adequately fire stopped. Fire stops are blocks of wood, brick or gypsum board placed between the walls and partitions at each floor level and at the eaves level. These blocks retard the upward passage of fire between the studs in hollow walls.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Alternative spelling of firestop"
      ],
      "links": [
        [
          "firestop",
          "firestop#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "fire stop"
}