"forward assist" meaning in English

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      "expansion": "forward assist",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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          "source": "w"
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "Firearms",
          "orig": "en:Firearms",
          "parents": [
            "Weapons",
            "Hunting",
            "Military",
            "Tools",
            "Human activity",
            "Society",
            "Technology",
            "Human behaviour",
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            "Human",
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          "source": "w"
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      ],
      "glosses": [
        "A button on certain rifles that pushes the bolt carrier forward, ensuring that the bolt is locked."
      ],
      "id": "en-forward_assist-en-noun-5achmPSh",
      "links": [
        [
          "firearm",
          "firearm"
        ],
        [
          "button",
          "button"
        ],
        [
          "rifle",
          "rifle"
        ],
        [
          "bolt carrier",
          "bolt carrier"
        ]
      ],
      "raw_glosses": [
        "(firearms) A button on certain rifles that pushes the bolt carrier forward, ensuring that the bolt is locked."
      ],
      "topics": [
        "engineering",
        "firearms",
        "government",
        "military",
        "natural-sciences",
        "physical-sciences",
        "politics",
        "tools",
        "war",
        "weaponry"
      ]
    }
  ],
  "word": "forward assist"
}

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      "args": {
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      "expansion": "forward assist",
      "name": "en-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
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        "en:Firearms"
      ],
      "glosses": [
        "A button on certain rifles that pushes the bolt carrier forward, ensuring that the bolt is locked."
      ],
      "links": [
        [
          "firearm",
          "firearm"
        ],
        [
          "button",
          "button"
        ],
        [
          "rifle",
          "rifle"
        ],
        [
          "bolt carrier",
          "bolt carrier"
        ]
      ],
      "raw_glosses": [
        "(firearms) A button on certain rifles that pushes the bolt carrier forward, ensuring that the bolt is locked."
      ],
      "topics": [
        "engineering",
        "firearms",
        "government",
        "military",
        "natural-sciences",
        "physical-sciences",
        "politics",
        "tools",
        "war",
        "weaponry"
      ]
    }
  ],
  "word": "forward assist"
}