"Leisler's bat" meaning in English

{
  "etymology_text": "Named to honour the naturalist Johann Philipp Achilles Leisler.",
  "forms": [
    {
      "form": "Leisler's bats",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Leisler's bat (plural Leisler's bats)",
      "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": "Bats",
          "orig": "en:Bats",
          "parents": [
            "Mammals",
            "Vertebrates",
            "Chordates",
            "Animals",
            "Lifeforms",
            "All topics",
            "Life",
            "Fundamental",
            "Nature"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A lesser noctule (Nyctalus leisleri), an insectivorous vesper bat."
      ],
      "id": "en-Leisler's_bat-en-noun-00Pp10dv",
      "links": [
        [
          "insectivorous",
          "insectivorous"
        ],
        [
          "vesper bat",
          "vesper bat"
        ]
      ],
      "wikipedia": [
        "Leisler's bat"
      ]
    }
  ],
  "word": "Leisler's bat"
}

{
  "etymology_text": "Named to honour the naturalist Johann Philipp Achilles Leisler.",
  "forms": [
    {
      "form": "Leisler's bats",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Leisler's bat (plural Leisler's bats)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English eponyms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Entries missing English vernacular names of taxa",
        "Entries using missing taxonomic name (species)",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Bats"
      ],
      "glosses": [
        "A lesser noctule (Nyctalus leisleri), an insectivorous vesper bat."
      ],
      "links": [
        [
          "insectivorous",
          "insectivorous"
        ],
        [
          "vesper bat",
          "vesper bat"
        ]
      ],
      "wikipedia": [
        "Leisler's bat"
      ]
    }
  ],
  "word": "Leisler's bat"
}