"mulm" meaning in English

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      "expansion": "mulm (uncountable)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "examples": [
        {
          "ref": "2013, C. W. Emmens, Keeping and Breeding Aquarium Fishes, page 115",
          "text": "The point is that the filter not only removes mulm from the tank but also ensures that this matter is very efficiently bathed in a constant flow of water, which will dissolve out anything that can be dissolved.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "The sludge that collects at the bottom (or walls) of an aquarium, consisting of fish excrement, decaying plant matter, and other assorted detritus"
      ],
      "id": "en-mulm-en-noun-4qS1k69S",
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        [
          "sludge",
          "sludge"
        ],
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          "aquarium",
          "aquarium"
        ],
        [
          "excrement",
          "excrement"
        ],
        [
          "decay",
          "decay"
        ],
        [
          "detritus",
          "detritus"
        ]
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "mulm"
}

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      "expansion": "mulm (uncountable)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "examples": [
        {
          "ref": "2013, C. W. Emmens, Keeping and Breeding Aquarium Fishes, page 115",
          "text": "The point is that the filter not only removes mulm from the tank but also ensures that this matter is very efficiently bathed in a constant flow of water, which will dissolve out anything that can be dissolved.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "The sludge that collects at the bottom (or walls) of an aquarium, consisting of fish excrement, decaying plant matter, and other assorted detritus"
      ],
      "links": [
        [
          "sludge",
          "sludge"
        ],
        [
          "aquarium",
          "aquarium"
        ],
        [
          "excrement",
          "excrement"
        ],
        [
          "decay",
          "decay"
        ],
        [
          "detritus",
          "detritus"
        ]
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "mulm"
}