"breastling" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "breast",
        "3": "-ling"
      },
      "expansion": "breast + -ling",
      "name": "af"
    }
  ],
  "etymology_text": "From breast + -ling.",
  "forms": [
    {
      "form": "breastlings",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "breastling (plural breastlings)",
      "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 terms suffixed with -ling",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "A suckling babe or child."
      ],
      "id": "en-breastling-en-noun-pR4YMKg8",
      "links": [
        [
          "suckling",
          "suckling"
        ],
        [
          "babe",
          "babe"
        ],
        [
          "child",
          "child"
        ]
      ],
      "raw_glosses": [
        "(rare) A suckling babe or child."
      ],
      "synonyms": [
        {
          "word": "suckling"
        }
      ],
      "tags": [
        "rare"
      ]
    }
  ],
  "word": "breastling"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "breast",
        "3": "-ling"
      },
      "expansion": "breast + -ling",
      "name": "af"
    }
  ],
  "etymology_text": "From breast + -ling.",
  "forms": [
    {
      "form": "breastlings",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "breastling (plural breastlings)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms suffixed with -ling",
        "English terms with rare senses"
      ],
      "glosses": [
        "A suckling babe or child."
      ],
      "links": [
        [
          "suckling",
          "suckling"
        ],
        [
          "babe",
          "babe"
        ],
        [
          "child",
          "child"
        ]
      ],
      "raw_glosses": [
        "(rare) A suckling babe or child."
      ],
      "tags": [
        "rare"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "suckling"
    }
  ],
  "word": "breastling"
}