"Fat Man" meaning in English

{
  "etymology_text": "A military code name.",
  "head_templates": [
    {
      "args": {
        "head": "Fat Man"
      },
      "expansion": "Fat Man",
      "name": "en-prop"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Entries with translation boxes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Mandarin terms with non-redundant manual transliterations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Mandarin translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Atomic bombings of Hiroshima and Nagasaki",
          "orig": "en:Atomic bombings of Hiroshima and Nagasaki",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Explosives",
          "orig": "en:Explosives",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Nuclear warfare",
          "orig": "en:Nuclear warfare",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Weapons",
          "orig": "en:Weapons",
          "parents": [],
          "source": "w"
        }
      ],
      "coordinate_terms": [
        {
          "word": "Little Boy"
        }
      ],
      "glosses": [
        "The nuclear bomb dropped over Nagasaki, Japan on August 9, 1945."
      ],
      "id": "en-Fat_Man-en-name-uCmkVPXx",
      "links": [
        [
          "nuclear bomb",
          "nuclear bomb"
        ],
        [
          "Nagasaki",
          "Nagasaki"
        ],
        [
          "Japan",
          "Japan"
        ]
      ],
      "translations": [
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "lang_code": "cmn",
          "roman": "Pàngzi",
          "sense": "Translations",
          "word": "胖子"
        }
      ]
    }
  ],
  "word": "Fat Man"
}

{
  "etymology_text": "A military code name.",
  "head_templates": [
    {
      "args": {
        "head": "Fat Man"
      },
      "expansion": "Fat Man",
      "name": "en-prop"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English proper nouns",
        "English uncountable nouns",
        "Entries with translation boxes",
        "Mandarin terms with non-redundant manual transliterations",
        "Pages with 1 entry",
        "Pages with entries",
        "Terms with Mandarin translations",
        "Translation table header lacks gloss",
        "en:Atomic bombings of Hiroshima and Nagasaki",
        "en:Explosives",
        "en:Nuclear warfare",
        "en:Weapons"
      ],
      "coordinate_terms": [
        {
          "word": "Little Boy"
        }
      ],
      "glosses": [
        "The nuclear bomb dropped over Nagasaki, Japan on August 9, 1945."
      ],
      "links": [
        [
          "nuclear bomb",
          "nuclear bomb"
        ],
        [
          "Nagasaki",
          "Nagasaki"
        ],
        [
          "Japan",
          "Japan"
        ]
      ]
    }
  ],
  "translations": [
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "lang_code": "cmn",
      "roman": "Pàngzi",
      "sense": "Translations",
      "word": "胖子"
    }
  ],
  "word": "Fat Man"
}