"M字開脚" meaning in Japanese

{
  "descendants": [
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "zh",
            "2": "M字腿"
          },
          "expansion": "Chinese: M字腿",
          "name": "desc"
        }
      ],
      "text": "Chinese: M字腿"
    }
  ],
  "forms": [
    {
      "form": "M字開脚",
      "ruby": [
        [
          "M",
          "エム"
        ],
        [
          "字",
          "じ"
        ],
        [
          "開",
          "かい"
        ],
        [
          "脚",
          "きゃく"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "emu-ji kaikyaku",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "エム-じ かいきゃく"
      },
      "expansion": "M(エム)字(じ)開(かい)脚(きゃく) • (emu-ji kaikyaku)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Japanese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with 3 kanji",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with redundant sortkeys",
          "parents": [
            "Terms with redundant sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms written in multiple scripts",
          "parents": [
            "Terms written in multiple scripts",
            "Terms by orthographic property",
            "Terms by lexical property"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "ja",
          "name": "Sex",
          "orig": "ja:Sex",
          "parents": [
            "All topics",
            "Reproduction",
            "Fundamental",
            "Life",
            "Nature"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "a pose where the legs form an M-shape"
      ],
      "id": "en-M字開脚-ja-noun-pNzylMOk",
      "links": [
        [
          "sex",
          "sex"
        ],
        [
          "M",
          "M#English"
        ]
      ],
      "raw_glosses": [
        "(sex) a pose where the legs form an M-shape"
      ],
      "topics": [
        "lifestyle",
        "sex",
        "sexuality"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[e̞mɯ̟ʑi ka̠ikʲa̠kɯ̟]"
    }
  ],
  "word": "M字開脚"
}

{
  "descendants": [
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "zh",
            "2": "M字腿"
          },
          "expansion": "Chinese: M字腿",
          "name": "desc"
        }
      ],
      "text": "Chinese: M字腿"
    }
  ],
  "forms": [
    {
      "form": "M字開脚",
      "ruby": [
        [
          "M",
          "エム"
        ],
        [
          "字",
          "じ"
        ],
        [
          "開",
          "かい"
        ],
        [
          "脚",
          "きゃく"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "emu-ji kaikyaku",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "エム-じ かいきゃく"
      },
      "expansion": "M(エム)字(じ)開(かい)脚(きゃく) • (emu-ji kaikyaku)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Japanese entries with incorrect language header",
        "Japanese lemmas",
        "Japanese links with redundant wikilinks",
        "Japanese nouns",
        "Japanese terms derived from the shape of letters",
        "Japanese terms spelled with first grade kanji",
        "Japanese terms spelled with secondary school kanji",
        "Japanese terms spelled with third grade kanji",
        "Japanese terms with 3 kanji",
        "Japanese terms with IPA pronunciation",
        "Japanese terms with IPA pronunciation missing pitch accent",
        "Japanese terms with redundant sortkeys",
        "Japanese terms written in multiple scripts",
        "Pages with 1 entry",
        "Pages with entries",
        "ja:Sex"
      ],
      "glosses": [
        "a pose where the legs form an M-shape"
      ],
      "links": [
        [
          "sex",
          "sex"
        ],
        [
          "M",
          "M#English"
        ]
      ],
      "raw_glosses": [
        "(sex) a pose where the legs form an M-shape"
      ],
      "topics": [
        "lifestyle",
        "sex",
        "sexuality"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[e̞mɯ̟ʑi ka̠ikʲa̠kɯ̟]"
    }
  ],
  "word": "M字開脚"
}

{
  "called_from": "parser/1336",
  "msg": "no corresponding start tag found for </span>",
  "path": [
    "M字開脚"
  ],
  "section": "Japanese",
  "subsection": "noun",
  "title": "M字開脚",
  "trace": ""
}