"walking fern" meaning in English

{
  "forms": [
    {
      "form": "walking ferns",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "walking fern (plural walking ferns)",
      "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": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "lifeform",
          "langcode": "en",
          "name": "Ferns",
          "orig": "en:Ferns",
          "parents": [
            "Spore plants",
            "Plants",
            "Lifeforms",
            "All topics",
            "Life",
            "Fundamental",
            "Nature"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Either of two species of fern in the genus Asplenium (Asplenium rhizophyllum or Asplenium sibiricum) that produce new plantlets from the tips of their leaves."
      ],
      "id": "en-walking_fern-en-noun-MgtuD9PK",
      "links": [
        [
          "species",
          "species"
        ],
        [
          "fern",
          "fern"
        ],
        [
          "genus",
          "genus"
        ],
        [
          "Asplenium",
          "Asplenium#Translingual"
        ],
        [
          "plantlet",
          "plantlet"
        ]
      ],
      "wikipedia": [
        "walking fern"
      ]
    }
  ],
  "word": "walking fern"
}

{
  "forms": [
    {
      "form": "walking ferns",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "walking fern (plural walking ferns)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Entries using missing taxonomic name (species)",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Ferns"
      ],
      "glosses": [
        "Either of two species of fern in the genus Asplenium (Asplenium rhizophyllum or Asplenium sibiricum) that produce new plantlets from the tips of their leaves."
      ],
      "links": [
        [
          "species",
          "species"
        ],
        [
          "fern",
          "fern"
        ],
        [
          "genus",
          "genus"
        ],
        [
          "Asplenium",
          "Asplenium#Translingual"
        ],
        [
          "plantlet",
          "plantlet"
        ]
      ],
      "wikipedia": [
        "walking fern"
      ]
    }
  ],
  "word": "walking fern"
}