"filter down" meaning in English

{
  "forms": [
    {
      "form": "filters down",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "filtering down",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "filtered down",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "filtered down",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "filter down (third-person singular simple present filters down, present participle filtering down, simple past and past participle filtered down)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "_dis": "51 49",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "50 50",
          "kind": "other",
          "name": "English phrasal verbs with particle (down)",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "Of a liquid; to move slowly down to lower substrate levels."
      ],
      "id": "en-filter_down-en-verb-yKCGDu1v",
      "links": [
        [
          "liquid",
          "liquid"
        ],
        [
          "lower",
          "lower"
        ],
        [
          "substrate",
          "substrate"
        ]
      ]
    },
    {
      "categories": [
        {
          "_dis": "51 49",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "50 50",
          "kind": "other",
          "name": "English phrasal verbs with particle (down)",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "text": "They might say that the economy is improving, but it is taking a long time for any money to filter down to the poorer classes."
        }
      ],
      "glosses": [
        "(by extension) Of information, or resources; to move slowly down to lower levels of an organisation, or population."
      ],
      "id": "en-filter_down-en-verb-tPi~V1~F",
      "links": [
        [
          "information",
          "information"
        ],
        [
          "resources",
          "resources"
        ],
        [
          "organisation",
          "organisation"
        ],
        [
          "population",
          "population"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) (by extension) Of information, or resources; to move slowly down to lower levels of an organisation, or population."
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "en-au-filter down.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/0/09/En-au-filter_down.ogg/En-au-filter_down.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/0/09/En-au-filter_down.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "filter down"
}

{
  "categories": [
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English phrasal verbs",
    "English phrasal verbs with particle (down)",
    "English terms with audio links",
    "English verbs"
  ],
  "forms": [
    {
      "form": "filters down",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "filtering down",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "filtered down",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "filtered down",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "filter down (third-person singular simple present filters down, present participle filtering down, simple past and past participle filtered down)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "glosses": [
        "Of a liquid; to move slowly down to lower substrate levels."
      ],
      "links": [
        [
          "liquid",
          "liquid"
        ],
        [
          "lower",
          "lower"
        ],
        [
          "substrate",
          "substrate"
        ]
      ]
    },
    {
      "categories": [
        "English idioms"
      ],
      "examples": [
        {
          "text": "They might say that the economy is improving, but it is taking a long time for any money to filter down to the poorer classes."
        }
      ],
      "glosses": [
        "(by extension) Of information, or resources; to move slowly down to lower levels of an organisation, or population."
      ],
      "links": [
        [
          "information",
          "information"
        ],
        [
          "resources",
          "resources"
        ],
        [
          "organisation",
          "organisation"
        ],
        [
          "population",
          "population"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) (by extension) Of information, or resources; to move slowly down to lower levels of an organisation, or population."
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "en-au-filter down.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/0/09/En-au-filter_down.ogg/En-au-filter_down.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/0/09/En-au-filter_down.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "filter down"
}