"臼齒" meaning in Japanese

{
  "forms": [
    {
      "form": "臼齒",
      "ruby": [
        [
          "臼",
          "きゅう"
        ],
        [
          "齒",
          "し"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "kyūshi",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "kiusi",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "うすば",
      "tags": [
        "alternative",
        "hiragana"
      ]
    },
    {
      "form": "usuba",
      "tags": [
        "Rōmaji"
      ]
    },
    {
      "form": "きうし",
      "roman": "kiusi",
      "tags": [
        "hiragana",
        "historical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "きゅうし",
        "hhira": "きうし"
      },
      "expansion": "臼(きゅう)齒(し) • (kyūshi) ^(←きうし (kiusi)?)",
      "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 kyūjitai spellings",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant alt parameters",
          "parents": [
            "Links with redundant alt parameters",
            "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": "Japanese words with multiple readings",
          "parents": [],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "extra": "molar",
          "word": "臼歯"
        }
      ],
      "glosses": [
        "Kyūjitai form of 臼歯: molar"
      ],
      "id": "en-臼齒-ja-noun-Hc4gBAt5",
      "links": [
        [
          "Kyūjitai",
          "kyūjitai"
        ],
        [
          "臼歯",
          "臼歯#Japanese"
        ],
        [
          "molar",
          "molar"
        ]
      ],
      "tags": [
        "form-of",
        "kyūjitai"
      ]
    }
  ],
  "word": "臼齒"
}

{
  "forms": [
    {
      "form": "臼齒",
      "ruby": [
        [
          "臼",
          "きゅう"
        ],
        [
          "齒",
          "し"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "kyūshi",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "kiusi",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "うすば",
      "tags": [
        "alternative",
        "hiragana"
      ]
    },
    {
      "form": "usuba",
      "tags": [
        "Rōmaji"
      ]
    },
    {
      "form": "きうし",
      "roman": "kiusi",
      "tags": [
        "hiragana",
        "historical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "きゅうし",
        "hhira": "きうし"
      },
      "expansion": "臼(きゅう)齒(し) • (kyūshi) ^(←きうし (kiusi)?)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Japanese entries with incorrect language header",
        "Japanese kyūjitai spellings",
        "Japanese lemmas",
        "Japanese links with redundant alt parameters",
        "Japanese links with redundant wikilinks",
        "Japanese nouns",
        "Japanese terms spelled with hyōgaiji kanji",
        "Japanese terms spelled with secondary school kanji",
        "Japanese terms with redundant sortkeys",
        "Japanese terms written with two Han script characters",
        "Japanese words with multiple readings"
      ],
      "form_of": [
        {
          "extra": "molar",
          "word": "臼歯"
        }
      ],
      "glosses": [
        "Kyūjitai form of 臼歯: molar"
      ],
      "links": [
        [
          "Kyūjitai",
          "kyūjitai"
        ],
        [
          "臼歯",
          "臼歯#Japanese"
        ],
        [
          "molar",
          "molar"
        ]
      ],
      "tags": [
        "form-of",
        "kyūjitai"
      ]
    }
  ],
  "word": "臼齒"
}

{
  "called_from": "parser/304",
  "msg": "HTML tag <span> not properly closed",
  "path": [
    "臼齒"
  ],
  "section": "Japanese",
  "subsection": "noun",
  "title": "臼齒",
  "trace": "started on line 2, detected on line 2"
}

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