"jack-hare" meaning in English

{
  "forms": [
    {
      "form": "jack-hares",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "jack-hare (plural jack-hares)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
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          "parents": [],
          "source": "w"
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          "parents": [],
          "source": "w"
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      "examples": [
        {
          "bold_text_offsets": [
            [
              144,
              153
            ]
          ],
          "ref": "1886, Peter Christen Asbjø￵rnsen, translated by H.L. Brækstad, Folk and Fairy Tales, page 76:",
          "text": "'Are there any hares about here?' I asked. 'Well, there are some left to be sure,' answered the peasant; 'on the Sukkestad-moor there is an old jack-hare, which many a hound and sportsman have been after, but he is not so easily killed, it appears.'",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A male hare."
      ],
      "id": "en-jack-hare-en-noun-POD~P3wp",
      "links": [
        [
          "hare",
          "hare"
        ]
      ]
    }
  ],
  "word": "jack-hare"
}

{
  "forms": [
    {
      "form": "jack-hares",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "jack-hare (plural jack-hares)",
      "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",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              144,
              153
            ]
          ],
          "ref": "1886, Peter Christen Asbjø￵rnsen, translated by H.L. Brækstad, Folk and Fairy Tales, page 76:",
          "text": "'Are there any hares about here?' I asked. 'Well, there are some left to be sure,' answered the peasant; 'on the Sukkestad-moor there is an old jack-hare, which many a hound and sportsman have been after, but he is not so easily killed, it appears.'",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A male hare."
      ],
      "links": [
        [
          "hare",
          "hare"
        ]
      ]
    }
  ],
  "word": "jack-hare"
}