"magma chamber" meaning in English

{
  "forms": [
    {
      "form": "magma chambers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "magma chamber (plural magma chambers)",
      "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": "topical",
          "langcode": "en",
          "name": "Geology",
          "orig": "en:Geology",
          "parents": [
            "Earth sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A large underground pool of molten rock lying under the surface of the earth's crust."
      ],
      "id": "en-magma_chamber-en-noun-rROzCHGt",
      "links": [
        [
          "geology",
          "geology"
        ],
        [
          "pool",
          "pool"
        ],
        [
          "molten",
          "molten"
        ],
        [
          "rock",
          "rock"
        ]
      ],
      "raw_glosses": [
        "(geology) A large underground pool of molten rock lying under the surface of the earth's crust."
      ],
      "topics": [
        "geography",
        "geology",
        "natural-sciences"
      ],
      "translations": [
        {
          "code": "da",
          "lang": "Danish",
          "sense": "a large underground pool of molten rock",
          "word": "magmakammer"
        },
        {
          "code": "eo",
          "lang": "Esperanto",
          "sense": "a large underground pool of molten rock",
          "word": "magma kameno"
        },
        {
          "code": "fr",
          "lang": "French",
          "sense": "a large underground pool of molten rock",
          "tags": [
            "feminine"
          ],
          "word": "chambre magmatique"
        },
        {
          "code": "hu",
          "lang": "Hungarian",
          "sense": "a large underground pool of molten rock",
          "word": "magmakamra"
        },
        {
          "code": "mt",
          "lang": "Maltese",
          "sense": "a large underground pool of molten rock",
          "tags": [
            "masculine"
          ],
          "word": "ħawt vulkaniku"
        },
        {
          "code": "es",
          "lang": "Spanish",
          "sense": "a large underground pool of molten rock",
          "tags": [
            "feminine"
          ],
          "word": "cámara magmática"
        },
        {
          "code": "uk",
          "lang": "Ukrainian",
          "roman": "mahmatyčnyj basejn",
          "sense": "a large underground pool of molten rock",
          "tags": [
            "feminine"
          ],
          "word": "магматичний басейн"
        }
      ],
      "wikipedia": [
        "magma chamber"
      ]
    }
  ],
  "word": "magma chamber"
}

{
  "forms": [
    {
      "form": "magma chambers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "magma chamber (plural magma chambers)",
      "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",
        "en:Geology"
      ],
      "glosses": [
        "A large underground pool of molten rock lying under the surface of the earth's crust."
      ],
      "links": [
        [
          "geology",
          "geology"
        ],
        [
          "pool",
          "pool"
        ],
        [
          "molten",
          "molten"
        ],
        [
          "rock",
          "rock"
        ]
      ],
      "raw_glosses": [
        "(geology) A large underground pool of molten rock lying under the surface of the earth's crust."
      ],
      "topics": [
        "geography",
        "geology",
        "natural-sciences"
      ],
      "wikipedia": [
        "magma chamber"
      ]
    }
  ],
  "translations": [
    {
      "code": "da",
      "lang": "Danish",
      "sense": "a large underground pool of molten rock",
      "word": "magmakammer"
    },
    {
      "code": "eo",
      "lang": "Esperanto",
      "sense": "a large underground pool of molten rock",
      "word": "magma kameno"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "a large underground pool of molten rock",
      "tags": [
        "feminine"
      ],
      "word": "chambre magmatique"
    },
    {
      "code": "hu",
      "lang": "Hungarian",
      "sense": "a large underground pool of molten rock",
      "word": "magmakamra"
    },
    {
      "code": "mt",
      "lang": "Maltese",
      "sense": "a large underground pool of molten rock",
      "tags": [
        "masculine"
      ],
      "word": "ħawt vulkaniku"
    },
    {
      "code": "es",
      "lang": "Spanish",
      "sense": "a large underground pool of molten rock",
      "tags": [
        "feminine"
      ],
      "word": "cámara magmática"
    },
    {
      "code": "uk",
      "lang": "Ukrainian",
      "roman": "mahmatyčnyj basejn",
      "sense": "a large underground pool of molten rock",
      "tags": [
        "feminine"
      ],
      "word": "магматичний басейн"
    }
  ],
  "word": "magma chamber"
}