"stairtower" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "stair",
        "3": "tower"
      },
      "expansion": "stair + tower",
      "name": "compound"
    }
  ],
  "etymology_text": "From stair + tower.",
  "forms": [
    {
      "form": "stairtowers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "stairtower (plural stairtowers)",
      "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": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "The castle had four stairtowers when it was built, but only two remain.",
          "type": "example"
        },
        {
          "ref": "2001, Flavia Alaya, Under the Rose: A Confession, page 114:",
          "text": "We faced each other from opposite walls of the well-rubbed stairtower poised in an unblinking lovesickly gaze.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A tower with stairs on the inside."
      ],
      "id": "en-stairtower-en-noun-dUhke7mb",
      "links": [
        [
          "tower",
          "tower"
        ],
        [
          "stair",
          "stair"
        ]
      ]
    }
  ],
  "word": "stairtower"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "stair",
        "3": "tower"
      },
      "expansion": "stair + tower",
      "name": "compound"
    }
  ],
  "etymology_text": "From stair + tower.",
  "forms": [
    {
      "form": "stairtowers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "stairtower (plural stairtowers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English compound terms",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms with quotations",
        "English terms with usage examples",
        "Pages with 1 entry"
      ],
      "examples": [
        {
          "text": "The castle had four stairtowers when it was built, but only two remain.",
          "type": "example"
        },
        {
          "ref": "2001, Flavia Alaya, Under the Rose: A Confession, page 114:",
          "text": "We faced each other from opposite walls of the well-rubbed stairtower poised in an unblinking lovesickly gaze.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A tower with stairs on the inside."
      ],
      "links": [
        [
          "tower",
          "tower"
        ],
        [
          "stair",
          "stair"
        ]
      ]
    }
  ],
  "word": "stairtower"
}