"space defense" meaning in English

{
  "forms": [
    {
      "form": "space defenses",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "space defense (plural space defenses)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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          "kind": "other",
          "name": "English entries with incorrect language header",
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      ],
      "glosses": [
        "Any defensive measure against an attack by missiles etc while in space"
      ],
      "id": "en-space_defense-en-noun-NaH8u2nD",
      "links": [
        [
          "defensive",
          "defensive"
        ],
        [
          "attack",
          "attack"
        ],
        [
          "missile",
          "missile"
        ]
      ],
      "synonyms": [
        {
          "word": "space defence"
        }
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "defensive measure",
          "word": "avaruuspuolustus"
        }
      ]
    }
  ],
  "word": "space defense"
}

{
  "forms": [
    {
      "form": "space defenses",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "space defense (plural space defenses)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        "English countable nouns",
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        "English multiword terms",
        "English nouns",
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        "Pages with entries",
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      ],
      "glosses": [
        "Any defensive measure against an attack by missiles etc while in space"
      ],
      "links": [
        [
          "defensive",
          "defensive"
        ],
        [
          "attack",
          "attack"
        ],
        [
          "missile",
          "missile"
        ]
      ]
    }
  ],
  "synonyms": [
    {
      "word": "space defence"
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "defensive measure",
      "word": "avaruuspuolustus"
    }
  ],
  "word": "space defense"
}