"special session" meaning in English

{
  "forms": [
    {
      "form": "special sessions",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "special session (plural special sessions)",
      "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": "Law",
          "orig": "en:Law",
          "parents": [
            "Justice",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A session in which lawmakers are convened outside of the normal legislative session, usually for the purpose of addressing an emergency or to complete a pressing task that was left unfinished during the normal session."
      ],
      "id": "en-special_session-en-noun-5JDIFWsU",
      "links": [
        [
          "law",
          "law#English"
        ],
        [
          "session",
          "session"
        ],
        [
          "legislative session",
          "legislative session"
        ],
        [
          "pressing",
          "pressing"
        ]
      ],
      "raw_glosses": [
        "(law) A session in which lawmakers are convened outside of the normal legislative session, usually for the purpose of addressing an emergency or to complete a pressing task that was left unfinished during the normal session."
      ],
      "synonyms": [
        {
          "word": "extraordinary session"
        }
      ],
      "topics": [
        "law"
      ],
      "wikipedia": [
        "special session"
      ]
    }
  ],
  "word": "special session"
}

{
  "forms": [
    {
      "form": "special sessions",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "special session (plural special sessions)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "en:Law"
      ],
      "glosses": [
        "A session in which lawmakers are convened outside of the normal legislative session, usually for the purpose of addressing an emergency or to complete a pressing task that was left unfinished during the normal session."
      ],
      "links": [
        [
          "law",
          "law#English"
        ],
        [
          "session",
          "session"
        ],
        [
          "legislative session",
          "legislative session"
        ],
        [
          "pressing",
          "pressing"
        ]
      ],
      "raw_glosses": [
        "(law) A session in which lawmakers are convened outside of the normal legislative session, usually for the purpose of addressing an emergency or to complete a pressing task that was left unfinished during the normal session."
      ],
      "synonyms": [
        {
          "word": "extraordinary session"
        }
      ],
      "topics": [
        "law"
      ],
      "wikipedia": [
        "special session"
      ]
    }
  ],
  "word": "special session"
}