"Galloway tube" meaning in English

{
  "etymology_text": "From the manufacturer's surname.",
  "forms": [
    {
      "form": "Galloway tubes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Galloway tube (plural Galloway tubes)",
      "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"
        },
        {
          "kind": "other",
          "name": "English entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A tapered thermic syphon water-tube inserted in the furnace of a Lancashire boiler."
      ],
      "id": "en-Galloway_tube-en-noun--oEqUtdB",
      "links": [
        [
          "water",
          "water"
        ],
        [
          "tube",
          "tube"
        ],
        [
          "furnace",
          "furnace"
        ],
        [
          "Lancashire boiler",
          "Lancashire boiler"
        ]
      ]
    }
  ],
  "word": "Galloway tube"
}

{
  "etymology_text": "From the manufacturer's surname.",
  "forms": [
    {
      "form": "Galloway tubes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Galloway tube (plural Galloway tubes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English eponyms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with non-redundant non-automated sortkeys"
      ],
      "glosses": [
        "A tapered thermic syphon water-tube inserted in the furnace of a Lancashire boiler."
      ],
      "links": [
        [
          "water",
          "water"
        ],
        [
          "tube",
          "tube"
        ],
        [
          "furnace",
          "furnace"
        ],
        [
          "Lancashire boiler",
          "Lancashire boiler"
        ]
      ]
    }
  ],
  "word": "Galloway tube"
}