"observation hut" meaning in English

{
  "forms": [
    {
      "form": "observation huts",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "observation hut (plural observation huts)",
      "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": "Buildings",
          "orig": "en:Buildings",
          "parents": [
            "Buildings and structures",
            "Architecture",
            "Applied sciences",
            "Art",
            "Sciences",
            "Culture",
            "All topics",
            "Society",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A rudimentary building used by people making field observations."
      ],
      "id": "en-observation_hut-en-noun-DNt9ffvL",
      "links": [
        [
          "rudimentary",
          "rudimentary"
        ],
        [
          "building",
          "building"
        ],
        [
          "field",
          "field"
        ],
        [
          "observation",
          "observation"
        ]
      ]
    }
  ],
  "word": "observation hut"
}

{
  "forms": [
    {
      "form": "observation huts",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "observation hut (plural observation huts)",
      "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",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Buildings"
      ],
      "glosses": [
        "A rudimentary building used by people making field observations."
      ],
      "links": [
        [
          "rudimentary",
          "rudimentary"
        ],
        [
          "building",
          "building"
        ],
        [
          "field",
          "field"
        ],
        [
          "observation",
          "observation"
        ]
      ]
    }
  ],
  "word": "observation hut"
}