"窒" meaning in Japanese

{
  "forms": [
    {
      "form": "“Jōyō” kanji",
      "tags": [
        "common"
      ]
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "character",
  "senses": [
    {
      "categories": [
        {
          "_dis": "46 54",
          "kind": "other",
          "name": "Common kanji",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "72 28",
          "kind": "other",
          "name": "Japanese terms with non-redundant manual transliterations",
          "parents": [
            "Terms with non-redundant manual transliterations",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "89 11",
          "kind": "other",
          "name": "Japanese terms with redundant transliterations",
          "parents": [
            "Terms with redundant transliterations",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "plug up"
      ],
      "id": "en-窒-ja-character-UMFpRG0f",
      "tags": [
        "kanji"
      ]
    },
    {
      "categories": [
        {
          "_dis": "46 54",
          "kind": "other",
          "name": "Common kanji",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "obstruct"
      ],
      "id": "en-窒-ja-character-moeRSUnD",
      "tags": [
        "kanji"
      ]
    }
  ],
  "word": "窒"
}

{
  "categories": [
    "Common kanji",
    "Japanese Han characters",
    "Japanese kanji with goon reading ちち",
    "Japanese kanji with goon reading てち",
    "Japanese kanji with kan'on reading ちつ",
    "Japanese kanji with kan'on reading てつ",
    "Japanese kanji with kun reading ふさ-がる",
    "Japanese kanji with kun reading ふさぐ",
    "Japanese kanji with kun readings missing okurigana designation",
    "Japanese terms spelled with 窒",
    "Japanese terms with non-redundant manual transliterations",
    "Japanese terms with redundant transliterations"
  ],
  "forms": [
    {
      "form": "“Jōyō” kanji",
      "tags": [
        "common"
      ]
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "character",
  "senses": [
    {
      "glosses": [
        "plug up"
      ],
      "tags": [
        "kanji"
      ]
    },
    {
      "glosses": [
        "obstruct"
      ],
      "tags": [
        "kanji"
      ]
    }
  ],
  "word": "窒"
}