"spec home" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "spec<id:speculation, clipped><qq:speculation>",
        "3": "home"
      },
      "expansion": "spec (speculation) + home",
      "name": "compound"
    }
  ],
  "etymology_text": "From spec (speculation) + home.",
  "forms": [
    {
      "form": "spec homes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "spec home (plural spec homes)",
      "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"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Architecture",
          "orig": "en:Architecture",
          "parents": [
            "Applied sciences",
            "Art",
            "Sciences",
            "Culture",
            "All topics",
            "Society",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A home that is built by or for a homebuilder according to their specifications without a purchase order; it is instead built on spec."
      ],
      "id": "en-spec_home-en-noun-Mx6IsHIr",
      "links": [
        [
          "homebuilder",
          "homebuilder"
        ],
        [
          "specifications",
          "specifications"
        ],
        [
          "purchase order",
          "purchase order"
        ],
        [
          "on spec",
          "on spec"
        ]
      ],
      "related": [
        {
          "word": "prefab"
        },
        {
          "word": "self-build"
        }
      ]
    }
  ],
  "word": "spec home"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "spec<id:speculation, clipped><qq:speculation>",
        "3": "home"
      },
      "expansion": "spec (speculation) + home",
      "name": "compound"
    }
  ],
  "etymology_text": "From spec (speculation) + home.",
  "forms": [
    {
      "form": "spec homes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "spec home (plural spec homes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "prefab"
    },
    {
      "word": "self-build"
    }
  ],
  "senses": [
    {
      "categories": [
        "English compound terms",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Architecture"
      ],
      "glosses": [
        "A home that is built by or for a homebuilder according to their specifications without a purchase order; it is instead built on spec."
      ],
      "links": [
        [
          "homebuilder",
          "homebuilder"
        ],
        [
          "specifications",
          "specifications"
        ],
        [
          "purchase order",
          "purchase order"
        ],
        [
          "on spec",
          "on spec"
        ]
      ]
    }
  ],
  "word": "spec home"
}