"立ち合い" meaning in Japanese

{
  "forms": [
    {
      "form": "立ち合い",
      "ruby": [
        [
          "立",
          "た"
        ],
        [
          "合",
          "あ"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "tachiai",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "立合い",
      "tags": [
        "alternative",
        "kanji"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "たちあい"
      },
      "expansion": "立(た)ち合(あ)い • (tachiai)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Japanese entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant alt parameters",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant wikilinks",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms read with kun'yomi",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with 2 kanji",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with Heiban pitch accent (Tōkyō)",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with non-redundant non-automated sortkeys",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with redundant sortkeys",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "ja",
          "name": "Sumo",
          "orig": "ja:Sumo",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "tachiai, the initial charge at the start of a sumo bout"
      ],
      "id": "en-立ち合い-ja-noun-70PGBrNm",
      "links": [
        [
          "sumo",
          "sumo"
        ],
        [
          "tachiai",
          "tachiai"
        ]
      ],
      "raw_glosses": [
        "(sumo) tachiai, the initial charge at the start of a sumo bout"
      ],
      "related": [
        {
          "roman": "tachiai",
          "ruby": [
            [
              "立",
              "た"
            ],
            [
              "会",
              "あ"
            ]
          ],
          "word": "立ち会い"
        }
      ],
      "topics": [
        "government",
        "hobbies",
        "lifestyle",
        "martial-arts",
        "military",
        "politics",
        "sports",
        "sumo",
        "war",
        "wrestling"
      ]
    }
  ],
  "sounds": [
    {
      "other": "たちあい"
    },
    {
      "ipa": "[ta̠t͡ɕia̠i]"
    }
  ],
  "word": "立ち合い"
}

{
  "forms": [
    {
      "form": "立ち合い",
      "ruby": [
        [
          "立",
          "た"
        ],
        [
          "合",
          "あ"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "tachiai",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "立合い",
      "tags": [
        "alternative",
        "kanji"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "たちあい"
      },
      "expansion": "立(た)ち合(あ)い • (tachiai)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "related": [
    {
      "roman": "tachiai",
      "ruby": [
        [
          "立",
          "た"
        ],
        [
          "会",
          "あ"
        ]
      ],
      "word": "立ち会い"
    }
  ],
  "senses": [
    {
      "categories": [
        "Japanese entries with incorrect language header",
        "Japanese lemmas",
        "Japanese links with redundant alt parameters",
        "Japanese links with redundant wikilinks",
        "Japanese nouns",
        "Japanese terms read with kun'yomi",
        "Japanese terms spelled with first grade kanji",
        "Japanese terms spelled with second grade kanji",
        "Japanese terms spelled with 合 read as あ",
        "Japanese terms spelled with 立 read as た",
        "Japanese terms with 2 kanji",
        "Japanese terms with Heiban pitch accent (Tōkyō)",
        "Japanese terms with IPA pronunciation",
        "Japanese terms with IPA pronunciation with pitch accent",
        "Japanese terms with non-redundant non-automated sortkeys",
        "Japanese terms with redundant sortkeys",
        "Pages with 1 entry",
        "Pages with entries",
        "ja:Sumo"
      ],
      "glosses": [
        "tachiai, the initial charge at the start of a sumo bout"
      ],
      "links": [
        [
          "sumo",
          "sumo"
        ],
        [
          "tachiai",
          "tachiai"
        ]
      ],
      "raw_glosses": [
        "(sumo) tachiai, the initial charge at the start of a sumo bout"
      ],
      "topics": [
        "government",
        "hobbies",
        "lifestyle",
        "martial-arts",
        "military",
        "politics",
        "sports",
        "sumo",
        "war",
        "wrestling"
      ]
    }
  ],
  "sounds": [
    {
      "other": "たちあい"
    },
    {
      "ipa": "[ta̠t͡ɕia̠i]"
    }
  ],
  "word": "立ち合い"
}