"take up arms" meaning in English

{
  "forms": [
    {
      "form": "takes up arms",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "taking up arms",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "took up arms",
      "tags": [
        "past"
      ]
    },
    {
      "form": "taken up arms",
      "tags": [
        "participle",
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "take<,,took,taken> up arms"
      },
      "expansion": "take up arms (third-person singular simple present takes up arms, present participle taking up arms, simple past took up arms, past participle taken up arms)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "antonyms": [
        {
          "word": "lay down one's arms"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Finnish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with French translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Maori translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Russian translations",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Prepare to fight; to arm oneself."
      ],
      "id": "en-take_up_arms-en-verb-DYTxqHtq",
      "links": [
        [
          "against",
          "against#English"
        ],
        [
          "for",
          "for#English"
        ]
      ],
      "raw_glosses": [
        "(transitive with against or for) Prepare to fight; to arm oneself."
      ],
      "raw_tags": [
        "with against or for"
      ],
      "tags": [
        "transitive"
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "Translations",
          "word": "tarttua aseisiin"
        },
        {
          "code": "fr",
          "lang": "French",
          "sense": "Translations",
          "word": "prendre les armes"
        },
        {
          "code": "mi",
          "lang": "Maori",
          "sense": "Translations",
          "word": "hāpai pū"
        },
        {
          "code": "ru",
          "lang": "Russian",
          "roman": "brátʹsja za orúžije",
          "sense": "Translations",
          "word": "бра́ться за ору́жие"
        },
        {
          "code": "ru",
          "lang": "Russian",
          "roman": "vzjátʹsja za orúžije",
          "sense": "Translations",
          "word": "взя́ться за ору́жие"
        }
      ]
    }
  ],
  "word": "take up arms"
}

{
  "forms": [
    {
      "form": "takes up arms",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "taking up arms",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "took up arms",
      "tags": [
        "past"
      ]
    },
    {
      "form": "taken up arms",
      "tags": [
        "participle",
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "take<,,took,taken> up arms"
      },
      "expansion": "take up arms (third-person singular simple present takes up arms, present participle taking up arms, simple past took up arms, past participle taken up arms)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "antonyms": [
        {
          "word": "lay down one's arms"
        }
      ],
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English verbs",
        "Terms with Finnish translations",
        "Terms with French translations",
        "Terms with Maori translations",
        "Terms with Russian translations",
        "Translation table header lacks gloss"
      ],
      "glosses": [
        "Prepare to fight; to arm oneself."
      ],
      "links": [
        [
          "against",
          "against#English"
        ],
        [
          "for",
          "for#English"
        ]
      ],
      "raw_glosses": [
        "(transitive with against or for) Prepare to fight; to arm oneself."
      ],
      "raw_tags": [
        "with against or for"
      ],
      "tags": [
        "transitive"
      ]
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "Translations",
      "word": "tarttua aseisiin"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "Translations",
      "word": "prendre les armes"
    },
    {
      "code": "mi",
      "lang": "Maori",
      "sense": "Translations",
      "word": "hāpai pū"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "brátʹsja za orúžije",
      "sense": "Translations",
      "word": "бра́ться за ору́жие"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "vzjátʹsja za orúžije",
      "sense": "Translations",
      "word": "взя́ться за ору́жие"
    }
  ],
  "word": "take up arms"
}