"chain fern" meaning in English

{
  "derived": [
    {
      "_dis1": "50 50",
      "taxonomic": "Woodwardia radicans",
      "word": "European chain fern"
    },
    {
      "_dis1": "50 50",
      "taxonomic": "Woodwardia fimbriata",
      "word": "giant chain fern"
    },
    {
      "_dis1": "50 50",
      "taxonomic": "Woodwardia unigemmata",
      "word": "jewelled chain fern"
    },
    {
      "_dis1": "50 50",
      "taxonomic": "Woodwardia spinulosa",
      "word": "Mexican chain fern"
    },
    {
      "_dis1": "50 50",
      "taxonomic": "Woodwardia areolata",
      "word": "netted chain fern"
    },
    {
      "_dis1": "50 50",
      "taxonomic": "Woodwardia orientalis",
      "word": "Oriental chain fern"
    },
    {
      "_dis1": "50 50",
      "taxonomic": "Woodwardia virginica",
      "word": "Virginia chain fern"
    }
  ],
  "forms": [
    {
      "form": "chain ferns",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "chainfern",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "chain fern (plural chain ferns)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "67 33",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "57 43",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "62 38",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "63 37",
          "kind": "other",
          "langcode": "en",
          "name": "Ferns",
          "orig": "en:Ferns",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "A fern of any of several species of two genera, in different families:",
        "Woodwardia, native to the Northern Hemisphere."
      ],
      "id": "en-chain_fern-en-noun-OSBP3n7F"
    },
    {
      "categories": [],
      "glosses": [
        "A fern of any of several species of two genera, in different families:",
        "Tmesipteris, native to the South Pacific, also called fork ferns."
      ],
      "id": "en-chain_fern-en-noun-4vMlpHsL",
      "links": [
        [
          "Tmesipteris",
          "Tmesipteris#Translingual"
        ]
      ],
      "synonyms": [
        {
          "word": "hanging fork fern"
        }
      ]
    }
  ],
  "word": "chain fern"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns",
    "Pages with 1 entry",
    "Pages with entries",
    "en:Ferns"
  ],
  "derived": [
    {
      "taxonomic": "Woodwardia radicans",
      "word": "European chain fern"
    },
    {
      "taxonomic": "Woodwardia fimbriata",
      "word": "giant chain fern"
    },
    {
      "taxonomic": "Woodwardia unigemmata",
      "word": "jewelled chain fern"
    },
    {
      "taxonomic": "Woodwardia spinulosa",
      "word": "Mexican chain fern"
    },
    {
      "taxonomic": "Woodwardia areolata",
      "word": "netted chain fern"
    },
    {
      "taxonomic": "Woodwardia orientalis",
      "word": "Oriental chain fern"
    },
    {
      "taxonomic": "Woodwardia virginica",
      "word": "Virginia chain fern"
    }
  ],
  "forms": [
    {
      "form": "chain ferns",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "chainfern",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "chain fern (plural chain ferns)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Entries using missing taxonomic name (genus)"
      ],
      "glosses": [
        "A fern of any of several species of two genera, in different families:",
        "Woodwardia, native to the Northern Hemisphere."
      ]
    },
    {
      "categories": [
        "Entries missing English vernacular names of taxa"
      ],
      "glosses": [
        "A fern of any of several species of two genera, in different families:",
        "Tmesipteris, native to the South Pacific, also called fork ferns."
      ],
      "links": [
        [
          "Tmesipteris",
          "Tmesipteris#Translingual"
        ]
      ],
      "synonyms": [
        {
          "word": "hanging fork fern"
        }
      ]
    }
  ],
  "word": "chain fern"
}