"breechblock" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "breech",
        "3": "block"
      },
      "expansion": "breech + block",
      "name": "compound"
    }
  ],
  "etymology_text": "breech + block",
  "forms": [
    {
      "form": "breechblocks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "breechblock (plural breechblocks)",
      "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": "Firearms",
          "orig": "en:Firearms",
          "parents": [
            "Weapons",
            "Hunting",
            "Military",
            "Tools",
            "Human activity",
            "Society",
            "Technology",
            "Human behaviour",
            "All topics",
            "Human",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The metal block that closes the breech of a breech-loading gun after insertion of the cartridge."
      ],
      "id": "en-breechblock-en-noun-sThuqHor",
      "links": [
        [
          "firearm",
          "firearm"
        ],
        [
          "block",
          "block"
        ],
        [
          "breech",
          "breech"
        ],
        [
          "breech-loading",
          "breech-loading"
        ],
        [
          "gun",
          "gun"
        ],
        [
          "cartridge",
          "cartridge"
        ]
      ],
      "raw_glosses": [
        "(firearms) The metal block that closes the breech of a breech-loading gun after insertion of the cartridge."
      ],
      "synonyms": [
        {
          "word": "breech block"
        }
      ],
      "topics": [
        "engineering",
        "firearms",
        "government",
        "military",
        "natural-sciences",
        "physical-sciences",
        "politics",
        "tools",
        "war",
        "weaponry"
      ],
      "translations": [
        {
          "code": "az",
          "lang": "Azerbaijani",
          "sense": "block that closes the breech of a breech-loading gun",
          "word": "çaxmaq"
        },
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "sense": "block that closes the breech of a breech-loading gun",
          "word": "槍閂"
        },
        {
          "code": "cmn",
          "english": "gun",
          "lang": "Chinese Mandarin",
          "roman": "qiāngshuān",
          "sense": "block that closes the breech of a breech-loading gun",
          "word": "枪闩"
        },
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "sense": "block that closes the breech of a breech-loading gun",
          "word": "炮閂"
        },
        {
          "code": "cmn",
          "english": "cannon",
          "lang": "Chinese Mandarin",
          "roman": "pàoshuān",
          "sense": "block that closes the breech of a breech-loading gun",
          "word": "炮闩"
        },
        {
          "code": "ru",
          "lang": "Russian",
          "roman": "zatvór",
          "sense": "block that closes the breech of a breech-loading gun",
          "tags": [
            "masculine"
          ],
          "word": "затво́р"
        }
      ],
      "wikipedia": [
        "breechblock"
      ]
    }
  ],
  "word": "breechblock"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "breech",
        "3": "block"
      },
      "expansion": "breech + block",
      "name": "compound"
    }
  ],
  "etymology_text": "breech + block",
  "forms": [
    {
      "form": "breechblocks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "breechblock (plural breechblocks)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English compound terms",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "en:Firearms"
      ],
      "glosses": [
        "The metal block that closes the breech of a breech-loading gun after insertion of the cartridge."
      ],
      "links": [
        [
          "firearm",
          "firearm"
        ],
        [
          "block",
          "block"
        ],
        [
          "breech",
          "breech"
        ],
        [
          "breech-loading",
          "breech-loading"
        ],
        [
          "gun",
          "gun"
        ],
        [
          "cartridge",
          "cartridge"
        ]
      ],
      "raw_glosses": [
        "(firearms) The metal block that closes the breech of a breech-loading gun after insertion of the cartridge."
      ],
      "topics": [
        "engineering",
        "firearms",
        "government",
        "military",
        "natural-sciences",
        "physical-sciences",
        "politics",
        "tools",
        "war",
        "weaponry"
      ],
      "wikipedia": [
        "breechblock"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "breech block"
    }
  ],
  "translations": [
    {
      "code": "az",
      "lang": "Azerbaijani",
      "sense": "block that closes the breech of a breech-loading gun",
      "word": "çaxmaq"
    },
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "sense": "block that closes the breech of a breech-loading gun",
      "word": "槍閂"
    },
    {
      "code": "cmn",
      "english": "gun",
      "lang": "Chinese Mandarin",
      "roman": "qiāngshuān",
      "sense": "block that closes the breech of a breech-loading gun",
      "word": "枪闩"
    },
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "sense": "block that closes the breech of a breech-loading gun",
      "word": "炮閂"
    },
    {
      "code": "cmn",
      "english": "cannon",
      "lang": "Chinese Mandarin",
      "roman": "pàoshuān",
      "sense": "block that closes the breech of a breech-loading gun",
      "word": "炮闩"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "zatvór",
      "sense": "block that closes the breech of a breech-loading gun",
      "tags": [
        "masculine"
      ],
      "word": "затво́р"
    }
  ],
  "word": "breechblock"
}