"black tooth" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "black tooth",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "lifeform",
          "langcode": "en",
          "name": "Mushrooms",
          "orig": "en:Mushrooms",
          "parents": [
            "Fungi",
            "Lifeforms",
            "All topics",
            "Life",
            "Fundamental",
            "Nature"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The tooth fungus Phellodon niger."
      ],
      "id": "en-black_tooth-en-noun-GJ0tK1bQ",
      "links": [
        [
          "tooth fungus",
          "tooth fungus"
        ]
      ],
      "wikipedia": [
        "Phellodon niger"
      ]
    }
  ],
  "word": "black tooth"
}

{
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "black tooth",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with topic categories using raw markup",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English nouns with unknown or uncertain plurals",
        "English terms with non-redundant non-automated sortkeys",
        "Entries using missing taxonomic name (species)",
        "en:Mushrooms"
      ],
      "glosses": [
        "The tooth fungus Phellodon niger."
      ],
      "links": [
        [
          "tooth fungus",
          "tooth fungus"
        ]
      ],
      "wikipedia": [
        "Phellodon niger"
      ]
    }
  ],
  "word": "black tooth"
}