"blast pipe" meaning in English

{
  "forms": [
    {
      "form": "blast pipes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "blast pipe (plural blast pipes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "blastpipe"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1944 November–December, “Modified G.W.R. ‘Hall’ Class Locomotives”, in The Railway Magazine, London: Tothill Press, →ISSN, →OCLC, page 350",
          "text": "[W]ith this arrangement the cylinders are cast separately from the saddle, and bolted to the frames on each side with a fabricated stiffener between the frames. This stiffener is carried up to form the saddle for the smokebox, and within it is fitted the exhaust pipes from the cylinders to the blast pipe.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Alternative form of blastpipe."
      ],
      "id": "en-blast_pipe-en-noun-joHsjiYY",
      "links": [
        [
          "blastpipe",
          "blastpipe#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "blast pipe"
}

{
  "forms": [
    {
      "form": "blast pipes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "blast pipe (plural blast pipes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "blastpipe"
        }
      ],
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "1944 November–December, “Modified G.W.R. ‘Hall’ Class Locomotives”, in The Railway Magazine, London: Tothill Press, →ISSN, →OCLC, page 350",
          "text": "[W]ith this arrangement the cylinders are cast separately from the saddle, and bolted to the frames on each side with a fabricated stiffener between the frames. This stiffener is carried up to form the saddle for the smokebox, and within it is fitted the exhaust pipes from the cylinders to the blast pipe.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Alternative form of blastpipe."
      ],
      "links": [
        [
          "blastpipe",
          "blastpipe#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "blast pipe"
}