"四六" meaning in Japanese

{
  "forms": [
    {
      "form": "四六",
      "ruby": [
        [
          "四",
          "し"
        ],
        [
          "六",
          "ろく"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "shiroku",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "しろく"
      },
      "expansion": "四(し)六(ろく) • (shiroku)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "num",
  "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 entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "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 redundant sortkeys",
          "parents": [
            "Terms with redundant sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with raw sortkeys",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "ja",
          "name": "Numbers",
          "orig": "ja:Numbers",
          "parents": [
            "All topics",
            "Terms by semantic function",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "through twenty-four hours",
          "roman": "shiroku jichū",
          "ruby": [
            [
              "四",
              "し"
            ],
            [
              "六",
              "ろく"
            ],
            [
              "時",
              "じ"
            ],
            [
              "中",
              "ちゅう"
            ]
          ],
          "text": "四六時中"
        }
      ],
      "glosses": [
        "four sixes; twenty-four"
      ],
      "id": "en-四六-ja-num-7YGGts~J",
      "links": [
        [
          "four",
          "four"
        ],
        [
          "six",
          "six"
        ],
        [
          "twenty-four",
          "twenty-four"
        ]
      ],
      "related": [
        {
          "english": "two sixes; twelve",
          "roman": "niroku",
          "ruby": [
            [
              "二",
              "に"
            ],
            [
              "六",
              "ろく"
            ]
          ],
          "word": "二六"
        },
        {
          "english": "three sixes; eighteen",
          "roman": "saburoku",
          "ruby": [
            [
              "三",
              "さぶ"
            ],
            [
              "六",
              "ろく"
            ]
          ],
          "word": "三六"
        },
        {
          "english": "five sixes; thirty",
          "roman": "goroku",
          "ruby": [
            [
              "五",
              "ご"
            ],
            [
              "六",
              "ろく"
            ]
          ],
          "word": "五六"
        }
      ]
    }
  ],
  "word": "四六"
}

{
  "forms": [
    {
      "form": "四六",
      "ruby": [
        [
          "四",
          "し"
        ],
        [
          "六",
          "ろく"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "shiroku",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "しろく"
      },
      "expansion": "四(し)六(ろく) • (shiroku)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "num",
  "related": [
    {
      "english": "two sixes; twelve",
      "roman": "niroku",
      "ruby": [
        [
          "二",
          "に"
        ],
        [
          "六",
          "ろく"
        ]
      ],
      "word": "二六"
    },
    {
      "english": "three sixes; eighteen",
      "roman": "saburoku",
      "ruby": [
        [
          "三",
          "さぶ"
        ],
        [
          "六",
          "ろく"
        ]
      ],
      "word": "三六"
    },
    {
      "english": "five sixes; thirty",
      "roman": "goroku",
      "ruby": [
        [
          "五",
          "ご"
        ],
        [
          "六",
          "ろく"
        ]
      ],
      "word": "五六"
    }
  ],
  "senses": [
    {
      "categories": [
        "Japanese entries with incorrect language header",
        "Japanese entries with topic categories using raw markup",
        "Japanese lemmas",
        "Japanese links with redundant wikilinks",
        "Japanese nouns",
        "Japanese terms spelled with first grade kanji",
        "Japanese terms with redundant sortkeys",
        "Japanese terms with usage examples",
        "Japanese terms written with two Han script characters",
        "Pages with raw sortkeys",
        "ja:Numbers"
      ],
      "examples": [
        {
          "english": "through twenty-four hours",
          "roman": "shiroku jichū",
          "ruby": [
            [
              "四",
              "し"
            ],
            [
              "六",
              "ろく"
            ],
            [
              "時",
              "じ"
            ],
            [
              "中",
              "ちゅう"
            ]
          ],
          "text": "四六時中"
        }
      ],
      "glosses": [
        "four sixes; twenty-four"
      ],
      "links": [
        [
          "four",
          "four"
        ],
        [
          "six",
          "six"
        ],
        [
          "twenty-four",
          "twenty-four"
        ]
      ]
    }
  ],
  "word": "四六"
}

{
  "called_from": "parser/1336",
  "msg": "no corresponding start tag found for </span>",
  "path": [
    "四六"
  ],
  "section": "Japanese",
  "subsection": "numeral",
  "title": "四六",
  "trace": ""
}