"main building" meaning in English

{
  "forms": [
    {
      "form": "main buildings",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "main building (plural main buildings)",
      "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"
        }
      ],
      "glosses": [
        "The most important building of a group of buildings (e.g. in a school/university)."
      ],
      "id": "en-main_building-en-noun-0P--YGYL",
      "links": [
        [
          "important",
          "important"
        ],
        [
          "building",
          "building"
        ],
        [
          "school",
          "school"
        ],
        [
          "university",
          "university"
        ]
      ],
      "translations": [
        {
          "code": "nl",
          "lang": "Dutch",
          "sense": "most important building of a group of buildings (e.g. in a school/university)",
          "tags": [
            "neuter"
          ],
          "word": "hoofdgebouw"
        },
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "most important building of a group of buildings (e.g. in a school/university)",
          "word": "päärakennus"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "most important building of a group of buildings (e.g. in a school/university)",
          "tags": [
            "feminine"
          ],
          "word": "Hauptgebäude"
        },
        {
          "code": "is",
          "lang": "Icelandic",
          "sense": "most important building of a group of buildings (e.g. in a school/university)",
          "tags": [
            "feminine"
          ],
          "word": "aðalbygging"
        },
        {
          "code": "nb",
          "lang": "Norwegian Bokmål",
          "sense": "most important building of a group of buildings (e.g. in a school/university)",
          "tags": [
            "feminine",
            "masculine"
          ],
          "word": "hovedbygning"
        },
        {
          "code": "nn",
          "lang": "Norwegian Nynorsk",
          "sense": "most important building of a group of buildings (e.g. in a school/university)",
          "tags": [
            "feminine",
            "masculine"
          ],
          "word": "hovudbygning"
        },
        {
          "code": "tr",
          "lang": "Turkish",
          "sense": "most important building of a group of buildings (e.g. in a school/university)",
          "word": "ana bina"
        }
      ],
      "wikipedia": [
        "Main Building"
      ]
    }
  ],
  "word": "main building"
}

{
  "forms": [
    {
      "form": "main buildings",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "main building (plural main buildings)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns"
      ],
      "glosses": [
        "The most important building of a group of buildings (e.g. in a school/university)."
      ],
      "links": [
        [
          "important",
          "important"
        ],
        [
          "building",
          "building"
        ],
        [
          "school",
          "school"
        ],
        [
          "university",
          "university"
        ]
      ],
      "wikipedia": [
        "Main Building"
      ]
    }
  ],
  "translations": [
    {
      "code": "nl",
      "lang": "Dutch",
      "sense": "most important building of a group of buildings (e.g. in a school/university)",
      "tags": [
        "neuter"
      ],
      "word": "hoofdgebouw"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "most important building of a group of buildings (e.g. in a school/university)",
      "word": "päärakennus"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "most important building of a group of buildings (e.g. in a school/university)",
      "tags": [
        "feminine"
      ],
      "word": "Hauptgebäude"
    },
    {
      "code": "is",
      "lang": "Icelandic",
      "sense": "most important building of a group of buildings (e.g. in a school/university)",
      "tags": [
        "feminine"
      ],
      "word": "aðalbygging"
    },
    {
      "code": "nb",
      "lang": "Norwegian Bokmål",
      "sense": "most important building of a group of buildings (e.g. in a school/university)",
      "tags": [
        "feminine",
        "masculine"
      ],
      "word": "hovedbygning"
    },
    {
      "code": "nn",
      "lang": "Norwegian Nynorsk",
      "sense": "most important building of a group of buildings (e.g. in a school/university)",
      "tags": [
        "feminine",
        "masculine"
      ],
      "word": "hovudbygning"
    },
    {
      "code": "tr",
      "lang": "Turkish",
      "sense": "most important building of a group of buildings (e.g. in a school/university)",
      "word": "ana bina"
    }
  ],
  "word": "main building"
}