"vocal sac" meaning in English

{
  "forms": [
    {
      "form": "vocal sacs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "vocal sac (plural vocal sacs)",
      "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": "Animal body parts",
          "orig": "en:Animal body parts",
          "parents": [
            "Body parts",
            "Animals",
            "Body",
            "Anatomy",
            "Lifeforms",
            "Human",
            "Biology",
            "Medicine",
            "All topics",
            "Life",
            "Sciences",
            "Fundamental",
            "Nature"
          ],
          "source": "w"
        },
        {
          "kind": "lifeform",
          "langcode": "en",
          "name": "Frogs",
          "orig": "en:Frogs",
          "parents": [
            "Anurans",
            "Amphibians",
            "Vertebrates",
            "Chordates",
            "Animals",
            "Lifeforms",
            "All topics",
            "Life",
            "Fundamental",
            "Nature"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The flexible membrane of skin possessed by most male frogs, used for amplification of the voice."
      ],
      "id": "en-vocal_sac-en-noun-1nOS4TJR",
      "links": [
        [
          "flexible",
          "flexible"
        ],
        [
          "membrane",
          "membrane"
        ],
        [
          "frog",
          "frog"
        ]
      ],
      "translations": [
        {
          "code": "et",
          "lang": "Estonian",
          "sense": "flexible voice-amplifying membrane of male frog",
          "word": "häälepõis"
        },
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "flexible voice-amplifying membrane of male frog",
          "word": "äänirakko"
        },
        {
          "code": "hu",
          "lang": "Hungarian",
          "sense": "flexible voice-amplifying membrane of male frog",
          "word": "hanghólyag"
        },
        {
          "code": "no",
          "lang": "Norwegian",
          "sense": "flexible voice-amplifying membrane of male frog",
          "word": "kvekkepose"
        }
      ],
      "wikipedia": [
        "vocal sac"
      ]
    }
  ],
  "word": "vocal sac"
}

{
  "forms": [
    {
      "form": "vocal sacs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "vocal sac (plural vocal sacs)",
      "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",
        "en:Animal body parts",
        "en:Frogs"
      ],
      "glosses": [
        "The flexible membrane of skin possessed by most male frogs, used for amplification of the voice."
      ],
      "links": [
        [
          "flexible",
          "flexible"
        ],
        [
          "membrane",
          "membrane"
        ],
        [
          "frog",
          "frog"
        ]
      ],
      "wikipedia": [
        "vocal sac"
      ]
    }
  ],
  "translations": [
    {
      "code": "et",
      "lang": "Estonian",
      "sense": "flexible voice-amplifying membrane of male frog",
      "word": "häälepõis"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "flexible voice-amplifying membrane of male frog",
      "word": "äänirakko"
    },
    {
      "code": "hu",
      "lang": "Hungarian",
      "sense": "flexible voice-amplifying membrane of male frog",
      "word": "hanghólyag"
    },
    {
      "code": "no",
      "lang": "Norwegian",
      "sense": "flexible voice-amplifying membrane of male frog",
      "word": "kvekkepose"
    }
  ],
  "word": "vocal sac"
}