"downy birch" meaning in English

{
  "forms": [
    {
      "form": "downy birches",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "downy birch (plural downy birches)",
      "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": "Birch family plants",
          "orig": "en:Birch family plants",
          "parents": [
            "Fagales order plants",
            "Plants",
            "Shrubs",
            "Trees",
            "Lifeforms",
            "All topics",
            "Life",
            "Fundamental",
            "Nature"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A deciduous tree of species Betula pubescens."
      ],
      "id": "en-downy_birch-en-noun-ErO6PPT5",
      "links": [
        [
          "deciduous",
          "deciduous"
        ],
        [
          "tree",
          "tree"
        ]
      ],
      "synonyms": [
        {
          "word": "moor birch"
        },
        {
          "word": "white birch"
        },
        {
          "word": "European white birch"
        },
        {
          "word": "hairy birch"
        }
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "Translations",
          "word": "hieskoivu"
        },
        {
          "code": "izh",
          "lang": "Ingrian",
          "sense": "Translations",
          "word": "hikiäin"
        },
        {
          "code": "tr",
          "lang": "Turkish",
          "sense": "Translations",
          "word": "tüylü huş"
        }
      ],
      "wikipedia": [
        "downy birch"
      ]
    }
  ],
  "word": "downy birch"
}

{
  "forms": [
    {
      "form": "downy birches",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "downy birch (plural downy birches)",
      "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 terms with non-redundant non-automated sortkeys",
        "Entries using missing taxonomic name (species)",
        "Translation table header lacks gloss",
        "en:Birch family plants"
      ],
      "glosses": [
        "A deciduous tree of species Betula pubescens."
      ],
      "links": [
        [
          "deciduous",
          "deciduous"
        ],
        [
          "tree",
          "tree"
        ]
      ],
      "wikipedia": [
        "downy birch"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "moor birch"
    },
    {
      "word": "white birch"
    },
    {
      "word": "European white birch"
    },
    {
      "word": "hairy birch"
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "Translations",
      "word": "hieskoivu"
    },
    {
      "code": "izh",
      "lang": "Ingrian",
      "sense": "Translations",
      "word": "hikiäin"
    },
    {
      "code": "tr",
      "lang": "Turkish",
      "sense": "Translations",
      "word": "tüylü huş"
    }
  ],
  "word": "downy birch"
}